NATIONAL CITY CORP
SC 13D, 1995-09-05
NATIONAL COMMERCIAL BANKS
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<PAGE>   1





                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549




                                  Schedule 13D


                   Under the Securities Exchange Act of 1934


                           NATIONAL CITY CORPORATION
                                (Name of Issuer)


                         Common Stock, par value $4.00
                         (Title of Class of Securities)


                                  635-405-103
                                 (CUSIP Number)


                              Robert H. Stevenson
                   Senior Vice President and General Counsel
                         Integra Financial Corporation
                               300 Fourth Avenue
                            Pittsburgh, Pennsylvania
                                 (412) 644-7515
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)


                                August 27, 1995
                      (Date of Event which Requires Filing
                               of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1 (b)(3) or (4), check the following box    [  ]

Check the following box if a fee is being paid with this statement in the first
instance [   ].  (A fee is not required only if the reporting person: (1) has a
previous statement on file reporting beneficial ownership of more than five
percent of the class of securities described in Item 1; and (2) has filed no
amendment subsequent thereto reporting beneficial ownership of less than five
percent of such class.  See Rule 13d-7.)

All ownership percentages set forth herein are based on the 147,320,360 shares
of National City Corporation Common Stock reported outstanding at July 24,
1995.
<PAGE>   2
                                  SCHEDULE 13D

  CUSIP 635-405-103


1.     Name of Reporting Person (S.S. OR I.R.S. IDENTIFICATION NO. 
       OF REPORTING PERSON)
       Integra Financial Corporation (IRS ID No. 25-138493) 
________________________________________________________________________________

2.     Check the Appropriate Box if a Member of a Group     (a)  [  ]
                                                            (b)  [  ]
________________________________________________________________________________

3.     SEC Use Only
________________________________________________________________________________

4.     Source of Funds  
       00
________________________________________________________________________________

5.     Check Box if Disclosure of Legal Proceedings is
       Required Pursuant To Items 2(d) or 2(e)                   [  ]
________________________________________________________________________________

6.     Citizenship or Place of Organization  
       Commonwealth of Pennsylvania
________________________________________________________________________________

          Number of            7.  Sole Voting Power         
           Shares                  12,098,600*
        Beneficially           __________________________________________
          Owned by             8.  Shared Voting Power                
            Each                   0
         Reporting             __________________________________________
          Person               9.  Sole Dispositive Power  
           With                    12,098,600*
                               __________________________________________
                               10. Shared Dispositive Power             
                                   0
________________________________________________________________________________

11.    Aggregate Amount Beneficially Owned by Each Reporting
       Person   12,098,600*
________________________________________________________________________________

12.    Check Box if the Aggregate Amount in Row (11)             [  ]
       Excludes Certain Shares
________________________________________________________________________________

13.    Percent of Class Represented by Amount in Row (11)      
       7.59%
________________________________________________________________________________

14.    Type of Reporting Person   CO, HC
________________________________________________________________________________

*      Assumes the exercise in full of the option granted pursuant to the
       Stock Option Agreement described in Item 6 hereof.  Integra Financial
       Corporation disclaims beneficial ownership of these shares.


                                     -2-
<PAGE>   3
                                  SCHEDULE 13D

  CUSIP 635-405-103


1.     Name of Reporting Person (S.S. OR I.R.S. IDENTIFICATION NO. 
       OF REPORTING PERSON)
       Integra Trust Company, National Association (IRS ID No. 25-0741760) 
________________________________________________________________________________

2.     Check the Appropriate Box if a Member of a Group     (a) [  ]
                                                            (b) [  ]
________________________________________________________________________________

3.     SEC Use Only
________________________________________________________________________________

4.     Source of Funds  
       00
________________________________________________________________________________

5.     Check Box if Disclosure of Legal Proceedings is
       Required Pursuant To Items 2(d) or 2(e)                   [  ]
________________________________________________________________________________

6.     Citizenship or Place of Organization:  
       Commonwealth of Pennsylvania
________________________________________________________________________________

        Number of              7.  Sole Voting Power             
         Shares                    16,602*
       Beneficially            __________________________________________
         Owned by              8.  Shared Voting Power           
           Each                    4,304*
         Reporting             __________________________________________
          Person               9.  Sole Dispositive Power
           With                    4,400*
                               __________________________________________
                               10. Shared Dispositive Power      
                                   6,706*
________________________________________________________________________________

11.    Aggregate Amount Beneficially Owned by Each Reporting
       Person   38,156*
________________________________________________________________________________

12.    Check Box if the Aggregate Amount in Row (11)             [  ]
       Excludes Certain Shares
________________________________________________________________________________

13.    Percent of Class Represented by Amount in Row (11)     
       0.03%
________________________________________________________________________________

14.    Type of Reporting Person   BK
________________________________________________________________________________

*      These shares are held by Integra Trust Company solely in a fiduciary
       capacity.  Integra Trust Company disclaims beneficial ownership of
       these shares.

                                     -3-
<PAGE>   4
                                  SCHEDULE 13D

  CUSIP 635-405-103


1.     Name of Reporting Person (S.S. OR I.R.S. IDENTIFICATION NO. 
       OF REPORTING PERSON)
       Integra Investment Company (IRS ID No. 51-0255979) 
________________________________________________________________________________

2.     Check the Appropriate Box if a Member of a Group     (a)  [  ]
                                                            (b)  [  ]
________________________________________________________________________________

3.     SEC Use Only
________________________________________________________________________________

4.     Source of Funds:  
       00
________________________________________________________________________________

5.     Check Box if Disclosure of Legal Proceedings is
       Required Pursuant To Items 2(d) or 2(e)                   [  ]
________________________________________________________________________________

6.     Citizenship or Place of Organization:  
       Delaware
________________________________________________________________________________

          Number of            7.  Sole Voting Power
           Shares                  108,624*
        Beneficially           __________________________________________
          Owned by             8.  Shared Voting Power
            Each                   0
         Reporting             __________________________________________
           Person              9.  Sole Dispositive Power       
            With                   108,624*
                               __________________________________________
                               10. Shared Dispositive Power 
                                   0
________________________________________________________________________________

11.    Aggregate Amount Beneficially Owned by Each Reporting
       Person   108,624*
________________________________________________________________________________

12.    Check Box if the Aggregate Amount in Row (11)             [  ]
       Excludes Certain Shares
________________________________________________________________________________

13.    Percent of Class Represented by Amount in Row (11)       0.07%
________________________________________________________________________________

14.    Type of Reporting Person:  IV, CO
________________________________________________________________________________

* Includes 64,368 shares of National City Common Stock which would be issuable
  upon conversion of 27,000 shares of National City 8% Cumulative Convertible
  Preferred Stock held by the reporting person. The reporting person disclaims
  beneficial ownership only as to 64,368 shares of the above reported amount of
  National City Common Stock.




                                     -4-
<PAGE>   5

ITEM 1.  SECURITY AND ISSUER.

         This Schedule 13D relates to the common stock, par value $4.00 per
share ("National City Common Stock"), of National City Corporation ("National
City").  National City is a corporation organized under the laws of the State
of Delaware and a registered bank holding company under the Bank Holding
Company Act of 1956, as amended ("BHC Act").  National City's principal
executive offices are located at 1900 East Ninth Street, Cleveland, Ohio 44114.


ITEM 2.  IDENTITY AND BACKGROUND.

         This Statement is being filed by Integra Financial Corporation, a
corporation organized under the laws of the Commonwealth of Pennsylvania and a
registered bank holding company under the BHC Act, whose principal executive
offices are located at Four PPG Place, Pittsburgh, Pennsylvania 15222-5408
("Integra"), Integra Trust Company, National Association, a wholly-owned
subsidiary of Integra and a bank and trust company organized under the laws of
the United States whose principal executive offices are located at 300 Fourth
Avenue, Pittsburgh, Pennsylvania 15278 ("Integra Trust Company"), and Integra
Investment Company, a wholly-owned subsidiary of Integra organized under the
laws of the State of Delaware whose principal executive offices are located
at Fourth and Wood Street, Pittsburgh, Pennsylvania 15278 ("Integra Investment
Company"). Collectively, Integra, Integra Trust Company and Integra Investment
Company are sometimes hereinafter referred to as "Reporting Persons."

         The name, business address, principal occupation and citizenship of
each director, executive officer and controlling person of Integra is set forth
on Schedule A hereto which is incorporated herein by reference.

         The name, business address, principal occupation and citizenship of
each director, executive officer and controlling person of Integra Trust
Company is set forth on Schedule B hereto which is incorporated herein by
reference.

         The name, business address, principal occupation and citizenship of
each director, executive officer and controlling person of Integra Investment
Company is set forth on Schedule C hereto which is incorporated herein by
reference.

         Integra conducts a general commercial and retail banking and trust
business through four bank subsidiaries and various bank-related subsidiaries,
principally in Western Pennsylvania.  Integra Trust Company is a wholly-owned
subsidiary of Integra which principally conducts a general trust business in
Western Pennsylvania.

        During the last five years, neither Integra, Integra Trust Company nor
Integra Investment Company nor, to their knowledge, any of their respective
directors, officers or controlling persons, have been convicted in a criminal
proceeding, excluding traffic violations and similar misdemeanors, nor have any
of such persons been a party to a civil proceeding of a judicial or
administrative body during the last five years, the result of which was a
judgment, decree or final order enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws or finding
any violation with respect to such laws and which judgment, decree or final
order was not subsequently adjudicated.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         Immediately after the execution of the Merger Agreement described
below, Integra and National City entered into a Stock Option Agreement dated as
of August 27, 1995 (the "Stock Option Agreement") pursuant to which National
City granted to Integra an option to purchase up to 8.2% of the outstanding
National City Common Stock for $31.625 per share in certain events.  The Stock
Option Agreement, which is attached hereto as Exhibit B, is described more
fully below.

         If Integra were to acquire any shares of National City Common Stock
pursuant to the Stock Option Agreement, said acquisition may be funded by
working capital, a cash dividend from one or more of Integra's subsidiaries,
borrowings under existing or other newly-established lines of credit and other
loan facilities (with other financial institutions not yet known), a debt or
equity offering of Integra securities, or any combination of the foregoing.

         Integra Trust Company holds shares of National City Common Stock
acquired and held solely in a fiduciary capacity.

         Integra Investment Company acquired shares of National City Common
Stock as a result of the merger of Ohio Bancorp with and into National City on
October 21, 1993. Integra Investment Company had previously acquired shares of
the stock of Ohio Bancorp for an aggregate purchase price of $739,288. Integra
Investment Company also acquired 27,000 shares of National City 8% Cumulative
Convertible Preferred Stock in the public offering of such stock on April 12,
1991 for an aggregate purchase price of $1,350,000.




                                     -5-
<PAGE>   6
ITEM 4. PURPOSE OF TRANSACTION.

         Immediately prior to the execution of the Stock Option Agreement,
Integra and National City entered into an Agreement and Plan of Merger dated as
of August 27, 1995 (the "Merger Agreement"), providing for the merger of
Integra with and into National City (the "Merger").  National City will be the
surviving corporation in the Merger.  Under the terms of the Merger Agreement,
each share of Integra common stock outstanding at the effective time of the
Merger will be converted into the right to receive two shares of National City
common stock ("National City Common Stock").  A copy of the Merger Agreement is
included as Exhibit A to this Schedule 13D and is specifically incorporated by
reference herein.

         The Stock Option Agreement was granted by National City as a condition
and inducement to Integra's willingness to enter into the Merger Agreement.
Integra granted a substantially similar stock option, exercisable for 19.9% of
the outstanding Integra common stock, to National City as a condition and
inducement to National City's willingness to enter into the Merger Agreement.

         Except as contemplated by the Merger Agreement and the Stock Option
Agreement and as set forth herein, Integra does not have any current plans or
proposals that relate to or would result in:

         (a)     The acquisition by any person of additional shares of National
         City Common Stock or the disposition of shares of National City Common
         Stock;

         (b)     An extraordinary corporate transaction, such as a merger,
         reorganization or liquidation, involving National City or any of its
         Subsidiaries;

         (c)     A sale or transfer of a material amount of assets of National
         City or any of its subsidiaries;

         (d)     Any change in the present Board of Directors or management of
         National City, including any plans or proposals to change the number
         or terms of directors or to fill any existing vacancies on the board;

         (e)     Any material change in the present capitalization or dividend
         policy of National City;

         (f)     Any other material change in National City's business or
         corporate structure;

         (g)     Any changes in National City's charter, bylaws or instruments
         corresponding thereto or other actions which may impede the
         acquisition of control of National City by any person; or

         (h)     Any action similar to any of those enumerated above.

         Integra Trust Company holds all of the shares of National City Common
Stock reported by it herein as a fiduciary and as such it does not have the
right to receive for its own account or the power to direct for its own account
the receipt of dividends from, or the proceeds from the sale of, such shares.
Such dividends and proceeds are applied and any voting power it exercises with
respect to such shares is exercised in accordance with and subject to its
fiduciary obligations under law and the instruments pursuant to which it holds
such shares as fiduciaries.

         Integra Investment Company acquired shares of National City
Common Stock and National City 8% Cumulative Convertible Preferred Stock 
for medium- to long-term investment purposes only. It may exercise
any and all of its rights as a shareholder of National City. In addition,
Integra Investment Company may determine to sell in the open market, in
privately negotiated transactions, or otherwise, all or part of its shares of
National City Common Stock.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

         The Stock Option Agreement does not permit Integra to purchase any
shares of National City Common Stock pursuant thereto unless certain specified
conditions to such purchase, contained in the Stock Option Agreement, occur.
Upon the occurrence of one or more of such conditions, Integra would be
entitled to purchase, at an exercise price of $31.625 per share (subject to
adjustment in certain events), 12,098,600 shares of National City Common Stock,
representing approximately 8.2% of the shares of National City Common Stock
outstanding at July 24, 1995, or approximately 7.59% of the shares of National
City Common Stock outstanding as of July 24, 1995, adjusted to reflect the
issuance of such 12,098,600 shares.

                                     -6-
<PAGE>   7
         Under the Stock Option Agreement, Integra currently does not have the
right to acquire any shares of National City Common Stock unless specific
conditions are met.  Accordingly, Integra does not have sole or shared voting
or dispositive power with respect to any shares of National City Common Stock
and Integra therefore disclaims beneficial ownership of the National City
Common Stock subject to the Stock Option Agreement until the conditions
permitting exercise occur.  Upon satisfaction of one or more such conditions,
Integra would have the right to purchase 12,098,600 shares, subject to
adjustment, of National City Common Stock, as to which it would have sole
voting power and sole dispositive power.

         As of June 30, 1995, Integra Trust Company may be deemed to own 38,156
shares (0.03%) of National City Common Stock as to which it exercises, solely
in a fiduciary capacity, sole voting power with respect to 16,602 shares,
shared voting power with respect to 4,304 shares, sole investment power with
respect to 4,400 shares and shared investment power with respect to 6,706
shares.  Integra may be deemed to beneficially own the shares of National City
Common Stock held by Integra Trust Company.  However, each of the Reporting 
Persons disclaims beneficial ownership of the shares of National City Common 
Stock held by Integra Trust Company, all of which shares are held solely in a 
fiduciary capacity.

        As of June 30, 1995, Integra Investment Company beneficially owned
44,256 shares (0.03%) of National City Common Stock as to which it exercises
sole voting and dispositive power. In addition, as of June 30, 1995, Integra 
Investment Company beneficially owned 27,000 shares of National City 8%
Cumulative Convertible Preferred Stock (the "National City Preferred Stock"),
which is convertible at the option of the holder into shares of National City
Common Stock, currently at the rate of 2.384 shares of National City Common
Stock for every one (1) share of National City Preferred Stock. Assuming the
conversion of all National City Preferred Stock held by Integra Investment
Company at the current rate of conversion, Integra Investment Company would be
the beneficial owner of 108,624 shares (0.07%) of National City Common Stock as
to which it would exercise sole voting and dispositive power. Integra
Investment Company disclaims beneficial ownership with respect to 64,368 shares
of National City Common Stock which it would receive upon conversion of
National City Preferred Stock. Integra may be  deemed to beneficially own the
shares of National City Common Stock held by Integra Investment Company.
Integra and Integra Trust Company each disclaim beneficial ownership of the
shares of National City Common Stock held by Integra Investment Company.

         The percentages shown in parentheses above are percentages of the
outstanding National City Common Stock based on 147,320,360 shares of National
City Common Stock reported outstanding as of July 24, 1995.

         To each of the Reporting Person's knowledge, the directors, officers
and controlling persons of each of the respective Reporting Persons do not
beneficially own any shares of National City Common Stock, except that Robert
A. Paul, a director of Integra, beneficially owns 8,000 shares of National City
Common Stock.

         No other person is known to have the right to receive or the power to
direct the receipt of dividends from, or the proceeds from the sale of the
securities covered by this Schedule 13D.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO SECURITIES OF THE ISSUER.

         Except as set forth below, and for the instruments pursuant to which
Integra Trust Company holds the shares of National City Common Stock reported
herein as fiduciary, none of the Reporting Persons nor any of their directors,
officers or controlling persons has any contracts, arrangements, understandings
or relationships with respect to any securities of National City.

         MERGER AGREEMENT.

         The following summary of certain provisions of the Merger Agreement is
qualified in its entirety by reference to the Merger Agreement, a copy of which
is attached as Exhibit A to this Schedule 13D and is incorporated by reference
herein.

         The Merger Agreement, dated as of August 27, 1995, provides that as of
the effective time of the Merger, each outstanding share of Integra Common
Stock, par value $1.00 per share, will be converted into two (2) shares of
National City Common Stock, par value $4.00 per share.  Cash will be paid in
lieu of issuance of certificates for fractional shares.  At July 31, 1995,
there were 32,892,968 shares of Integra Common Stock outstanding on a fully
diluted basis.  On August 25, 1995, the last trading day prior to the
announcement of the Merger Agreement, National City Common Stock's closing
price on the New York Stock Exchange was $31.375 per share.

        The Merger Agreement also provides that after the effective time of the
Merger, the Board of Directors of National City shall increase by such
number as is necessary to create four (4) vacancies and shall elect four (4)
Integra directors to fill such vacancies.  The persons elected to the National
City Board of Directors shall be mutually agreed upon by Integra and National
City.

         Consummation of the Merger is subject to a number of conditions
including (i) receipt of approval of the Merger Agreement by shareholders of
Integra and National City, (ii) receipt of all required regulatory approvals,

                                     -7-
<PAGE>   8
(iii) receipt of an opinion of counsel to the effect that, among other
things, the Merger qualifies as a reorganization under Section 368 of the
Internal Revenue Code of 1986, as amended, and that the shareholders of Integra
will not recognize any gain or loss for Federal income tax purposes upon the
exchange of the Integra Common Stock solely for National City Common Stock in
the Merger, (iv) receipt of an opinion from National City's independent
accountants to the effect that the Merger qualifies for pooling-of-interest
accounting treatment, and (v) the effectiveness of the Registration Statement
relating to the National City Common Stock issued in the Merger.  None of the
required regulatory approvals has yet been obtained.

         Under the Merger Agreement, Integra agrees, among other things, to
operate its business in the ordinary course and to use its commercially
reasonable efforts to preserve intact its business organization.  Further,
Integra agrees that prior to the effective time of the Merger, it will not,
without the consent of National City, among other things:  (i) pay dividends on
Integra Common Stock other than regular quarterly dividends in an amount not to
exceed .50c. per share per quarter; (ii) issue or sell any share of capital
stock or any other securities; (iii) amend its articles of incorporation or
bylaws; (iv) take any action which would disqualify the Merger as a "pooling of
interests" for accounting purposes; or (v) solicit or initiate any proposals
relating to any acquisition of Integra assets or any merger or consolidation of
a third party with Integra.  Subject to any restrictions imposed by applicable
law, the Merger Agreement requires Integra to use its best efforts to purchase
in the open market an equivalent number of shares of Integra Common Stock as
are issued in connection with outstanding Integra stock options which are
exercised between the date of the Merger Agreement and the closing date of the
Merger.  Under the Merger Agreement, National City agrees to certain
restrictions on the conduct of its business prior to the effective time of the
Merger.



         OPTION AGREEMENT.

         The following summary of certain provisions of the Stock Option
Agreement is qualified in its entirety by reference to the Stock Option
Agreement, a copy of which is attached as Exhibit B hereto and is incorporated
by reference herein.

         The Stock Option Agreement provides for the purchase by Integra of up
to 12,098,600 shares, subject to certain adjustment in certain events, of
National City Common Stock (the "National City Option Shares") at an exercise
price, subject to adjustment in certain events, of $31.625 per share, payable
in cash.  The National City Option Shares, if issued pursuant to the Stock
Option Agreement, would represent approximately 8.2% of the National City
Common Stock issued and outstanding, without giving effect to the issuance of
any shares pursuant to an exercise of the option provided under the Stock
Option Agreement (the "National City Option").

         The number of shares of National City Common Stock subject to the
National City Option will be increased to the extent that National City issues
additional shares of National City Common Stock (otherwise than pursuant to an
exercise of the National City Option) such that the number of National City
Option Shares continues to equal 8.2% of the National City Common Stock then
issued and outstanding, without giving effect to the issuance of shares
pursuant to an exercise of the National City Option.  The price per share at
which the National City option Shares may be purchased pursuant to the National
City Option will be adjusted in the event that National City issues or agrees
to issue any shares of National City Common Stock (other than as permitted
under the Agreement) at a price less than $31.625 per share (as such price may
be adjusted pursuant to the National City Option) to equal such lower price per
share.  The number of shares of National City Common Stock subject to the
National City Option, and the applicable exercise price per National City
Option Share, also will be appropriately adjusted in the event of any stock
dividend, split-up, merger, recapitalization, combination, subdivision,
conversion, exchange of shares, or similar event relating to National City.

         Integra or any other holder or holders of National City Options
(collectively, the "Holder") may exercise the National City Option, in whole or
in part, subject to regulatory approval, at any time within 30 days (subject to
extension as provided in the National City Option) after both an "Initial
Triggering Event" and a "Subsequent

                                     -8-
<PAGE>   9
Triggering Event" occur prior to termination of the National City Option.  The
term "Initial Triggering Event" is defined as the occurrence of any of the
following events:

                 (i)      National City or any National City subsidiary,
         without Integra's prior written consent, enters into an agreement with
         any person or group (other than Integra or any Integra subsidiary) to
         engage in, or National City's Board of Directors recommends that the
         National City shareholders approve or accept (other than as
         contemplated by the Merger Agreement), any (x) merger or consolidation,
         or similar transaction, involving National City or any significant 
         National City subsidiary, (y) purchase, lease, or other acquisition of
         all or substantially all of the assets of National City or any 
         significant National City subsidiary, or (z) purchase or other
         acquisition (including by way of merger, consolidation, share exchange
         or otherwise) of securities representing 30% or more of the voting
         power of National City or any significant National City subsidiary
         (each of the transactions described in the preceding clauses (x)-(z)
         herein is referred to as an "Acquisition Transaction");

         (ii)    any person or group (other than Integra, any Integra
subsidiary acquires beneficial ownership or the right to acquire beneficial
ownership of 30% or more of the outstanding shares of National City Common
Stock.

         "Subsequent Triggering Event" is defined as either (A) the acquisition
by any person or group of beneficial ownership of 40% or more of the then
outstanding National City Common Stock, or (B) the occurrence of the Initial
Triggering Event described in clause (i) above, except that the percentage
reference in subclause (z) thereof shall be 40%.

         Within thirty (30) days (subject to extension as provided in the
National City Option) after a Subsequent Triggering Event prior to the
termination of the National City Option, Integra (on behalf of itself or any
subsequent Holder) may demand that the National City Option and the related
National City Option Shares be registered under the Securities Act of 1933, as
amended (the "Securities Act").  Upon such demand, National City must effect
such registration promptly, subject to certain exceptions.  Integra is entitled
to two such registrations.

         The National City Option terminates (i) immediately prior to the
Effective Time, (ii) upon termination of the Merger Agreement in accordance
with the terms thereof (other than a termination resulting from a willful
breach by National City of any provision of the Merger Agreement) prior to the
occurrence of an Initial Triggering Event, or (iii) twelve (12) months after
termination of the Merger Agreement following the occurrence of an Initial
Triggering Event (provided that if an Initial Triggering Event occurs after or
continues beyond such termination, the National City Option will terminate
twelve (12) months from the expiration of the last Initial Triggering Event to
expire, but in no event more than eighteen (18) months after such termination).

         Within thirty (30) days (subject to extension as provided in the
National City Option) after a Subsequent Triggering Event and prior to
termination of the National City Option, subject to regulatory approval,
National City is required (i) at the request of the Holder, to repurchase the
National City Option from the Holder at a price ("National City Option
Repurchase Price") equal to the amount by which (x) the "market/offer price"
(as hereinafter defined) exceeds (y) the then applicable National City option
exercise price, multiplied by the number of shares for which the National City
Option may then be exercised; and (ii) at the request of the owner of National
City Option Shares from time to time (the "Owner") to repurchase such number of
National City Option Shares from the Owner as the owner designates at a price
per share (the "National City Option Share Repurchase Price) equal to the
"market/offer price." In either case, the National City Option Repurchase Price
or National City Option Share Repurchase Price also would include Integra's
reasonable out-of-pocket expenses incurred in connection with the transactions
contemplated by the Merger Agreement, including legal, accounting, and
investment banking fees ("Out-of-Pocket Expenses").  "Market/offer price" means
the highest of (A) the price per share of National City Common Stock at which a
tender offer or exchange offer therefor has been made, (B) the price per share
of National City Common Stock to be paid by any third party pursuant to an
agreement with National City, (C) the highest closing price for shares of
National City Common Stock within the thirty-day period immediately preceding
the date the Holder gives notice of the required repurchase of the National
City Option or the owner gives notice of the required repurchase of National
City Option Shares, as the case may be, and (D) in the event of the sale of

                                     -9-
<PAGE>   10
all or substantially all of National City's assets, the sum of the price paid
in such sale for such assets and the current market value of the remaining
assets of National City divided by the number of shares of National City Common
Stock then outstanding.

         In the event that prior to termination of the National City Option,
National City enters into an agreement (i) to consolidate with or merge into
any entity other than Integra or one of its subsidiaries and shall not be the
continuing or surviving corporation of such consolidation or merger, (ii) to
permit any entity other than Integra or one of its subsidiaries to merge into
National City with National City as the continuing or surviving corporation,
but in connection therewith the then outstanding shares of National City Common
Stock are changed into or exchanged for securities of any other person or cash
or any other property, or the then outstanding shares of National City Common
Stock after such merger represents less than 50% of the outstanding shares and
share equivalents of the merged company, or (iii) to sell or transfer all or
substantially all of its assets to any entity other than Integra or one of its
subsidiaries, then the National City Option will be converted into or exchanged
for an option (a "Substitute Option") to purchase shares of common stock of, at
the Holder's option, either the continuing or surviving corporation of a merger
or a consolidation, the transferee of all or substantially all of National
City's assets, or the person controlling such continuing or surviving
corporation or transferee.  The number of shares subject to the Substitute
Option and the exercise price per share will be determined in accordance with a
formula in the National City Option.  To the extent possible, the Substitute
Option will contain other terms and conditions that are the same as those in
the National City Option.

         Subject to regulatory approval, the issuer of a Substitute Option will
be required to repurchase such option at the request of the holder thereof and
to repurchase any shares of such issuer's common stock ("Substitute Common
Stock") issued upon exercise of a Substitute Option ("Substitute Shares") at
the request of the owner thereof.  The repurchase price for a Substitute option
will equal the amount by which (A) the "Highest Closing Price" (as defined
below) exceeds (B) the exercise price of the Substitute Option, multiplied by
the number of shares of Substitute Common Stock for which the Substitute Option
may be exercised, plus Integra's Out-of-Pocket Expenses.  The repurchase price
for Substitute Shares shall equal the "Highest Closing Price" multiplied by the
number of Substitute Shares to be repurchased, plus Integra's Out-of-Pocket
Expenses.  As used herein, "Highest Closing Price" means the highest closing
price for shares of Substitute Common Stock within the thirty-day period
immediately preceding the date the holder gives notice of the required
repurchase of the Substitute Option or the owner gives notice of the required
repurchase of Substitute Shares, as the case may be.

         Neither National City nor Integra may assign any of its respective
rights and obligations under the National City Option to any other person
without the other party's written consent, except that if a Subsequent
Triggering Event occurs prior to termination of the National City Option,
within thirty (30) days thereafter (subject to extension as provided in the
National City Option), Integra, subject to the National City Option, may assign
in whole or in part its rights and obligations thereunder.  In addition, until
thirty (30) days after the Federal Reserve Board approves an application by
Integra to acquire the National City Option Shares, Integra may not assign its
rights under the National City Option except in (i) a widely dispersed public
distribution, (ii) a private placement in which no one party acquires the right
to purchase in excess of 2% of the voting shares of National City, (iii) an
assignment to a single party for the purpose of conducting a widely dispersed
public distribution on Integra's behalf, or (iv) any other manner approved by
the Federal Reserve Board.

         The rights and obligations of National City and Integra under the
National City Option are subject to receipt of any required regulatory
approvals.  Without the prior approval of the Federal Reserve Board, Integra
may not acquire more than 5% of the outstanding National City Common Stock.

                                     -10-
<PAGE>   11
ITEM 7. MATERIALS TO BE FILED AS EXHIBITS.

         1.      Agreement and Plan of Merger dated as of August 27, 1995 by
and between National City Corporation and Integra Financial Corporation.

         2.      Stock Option Agreement dated as of August 27, 1995 by and
between Integra Financial Corporation and National City Corporation.

                                     -11-
<PAGE>   12
                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
     Exhibit                                                Description
     -------                                                -----------
        <S>      <C>
        A        Agreement and Plan of Merger dated as of August 27, 1995, by 
                 and between National City Corporation and Integra Financial Corporation

        B        Stock Option Agreement dated as of August 27, 1995, by and 
                 between Integra Financial Corporation and National City 
                 Corporation
</TABLE>

                                     -12-
<PAGE>   13
                                   Signature


After reasonable inquiry and to the best of the undersigned's knowledge and
belief, the undersigned certifies that the information set forth in this
statement regarding the undersigned is true, complete and correct.


                                          INTEGRA FINANCIAL CORPORATION


Date:  September 5, 1995                  By:/s/ ROBERT H. STEVENSON
                                             ------------------------------
                                                  Robert H. Stevenson
                                                  Senior Vice President and 
                                                  General Counsel

                                     -13-
<PAGE>   14
                                   Signature

After reasonable inquiry and to the best of the undersigned's knowledge and
belief, the undersigned certifies that the information set forth in this
statement regarding the undersigned is true, complete and correct.

                                           INTEGRA TRUST COMPANY


Date:  September 5, 1995                    By:/s/ STEPHEN G. HARTLE
                                              --------------------------
                                                   Stephen G. Hartle
                                                   President

                                     -14-
<PAGE>   15
                                  SIGNATURE


    After reasonable inquiry and to the best of the undersigned's knowledge and
belief, the undersigned certifies that the information set forth in this
statement regarding the undersigned is true, complete and correct.


                                   INTEGRA INVESTMENT COMPANY

Date: September 5, 1995            By: /s/ CHARLES R. SKILLINGTON
                                       -------------------------------
                                           Charles R. Skillington
                                           President


                                     -15-
<PAGE>   16
                                   Schedule A

                         Integra Financial Corporation
                                 Four PPG Place
                      Pittsburgh, Pennsylvania 15222-5408


         The names of the Directors and the names and titles of the Executive
Officers of Integra Financial Corporation and their business addresses and
present principal occupations are set forth below.  If no address is given, the
Director's or Executive Officer's business address is that of Integra Financial
Corporation, Four PPG Place, Pittsburgh, Pennsylvania 15222-5408.  Unless
otherwise indicated, each occupation set forth opposite an individual's name
refers to Integra Financial Corporation, and each individual is a citizen of
the United States.

<TABLE>
<CAPTION>
         Name and Business Address                          Present Principal Occupation
         -------------------------                          ----------------------------
         <S>                                                <C>
         William F. Roemer                                  Chairman and Chief
                                                              Executive Officer

         Leonard M. Carroll                                 President and Chief Operating Officer

         John R. Echement*                                  Vice Chairman
                                                                         

         Charles R. Skillington*                            Vice Chairman and Treasurer

         Thomas W. Golonski*                                Executive Vice President,
                                                              Commercial Banking

         William J. Burt*                                   Senior Vice President, Bank Administration

         Gary W. Deschamps*                                 Senior Vice President, Operations & Data Processing

         Richard B. Mahany*                                 Senior Vice President, Investments

         Paul N. Smocer*                                    Senior Vice President and Chief Auditor
 
         Robert H. Stevenson*                               Senior Vice President and General Counsel

         Gary E. Wolbert*                                   Senior Vice President and Chief Financial Officer

         Mary A. York*                                      Senior Vice President, Human Resources

         James S. Beckwith, III                             Chairman of the Board
         P.O. Box 8718                                      Beckwith Machinery Company
         Pittsburgh, PA 15221
<FN>

__________________________________

*   Not a Director.  All other persons named are Directors of Integra Financial
    Corporation.
</TABLE>
                                     -16-
<PAGE>   17
<TABLE>
<CAPTION>
         Name and Business Address                          Present Principal Occupation
         -------------------------                          ----------------------------
         <S>                                                <C>
         James S. Broadhurst                                Chairman and Chief Executive
         100 Park Manor Drive                                 Officer
         Pittsburgh, PA 15205                               Eat 'N Park Restaurants

         Carl D. Doverspike                                 Partner
         750 East Sample Road                               J. C. Enterprises
         Pompano Beach, FL 33064

         James E. Feeney                                    Senior Vice President
         Wheatland, PA 16161                                Wheatland Tube Company
         
         William A. Freeman                                 President
         One Zurn Place                                     Zurn Industries, Inc.
         Erie, PA 16505

         Walter J. Greenleaf, Jr.                           Chairman and Chief Executive
         One Greenleaf Drive                                  Officer
         P.O. Box 1040                                      Greenleaf Corporation
         Saegertown, PA 16433                               

         Stanley R. Gumberg                                 Chairman
         1051 Brinton Road                                  J. J. Gumberg Company
         Pittsburgh, PA 15221

         F. William Hirt                                    Chairman
         100 Erie Insurance Place                           Erie Insurance Group
         Erie, PA 16530

         John G. Koedel, Jr.                                Vice Chairman
         One Front Street                                   National Forge Company
         Irvine, PA 16329

         Robert F. Patton                                   Chairman
         293 Dixon Avenue                                   Bank Consulting Associates
         Pittsburgh, PA 15216

         Robert A. Paul                                     President and Chief
         600 Grant Street                                   Executive Officer
         Suite 4600                                         Ampco-Pittsburgh Corporation
         Pittsburgh, PA 15219

         Michael A. Schuler                                 Chairman, President and Chief
         33 Barbour Street                                    Executive Officer
         Bradford, PA 16701                                 Zippo Manufacturing Company
</TABLE>

                                     -17-
<PAGE>   18
<TABLE>
         <S>                                                <C>
         Henry B. Suhr, Jr.                                 Retired President
         P.O. Box 416                                       Red Valley Oil Company
         Oil City, PA 16301

         Robert K. Wagner                                   Chairman and Chief Executive
         436 Seventh Avenue                                   Officer
         Pittsburgh, PA 15219-1800                          Koppers Industries, Inc.

         Phillips Wiegand                                   President and Chief Executive
         205 N. Main Street                                   Officer
         Butler, PA 16001                                   T.W. Phillips Gas and Oil Company

         Margot B. Woodwell                                 Executive Producer/Community Outreach
         4802 Fifth Avenue                                  QED Communications
         Pittsburgh, PA 15213
</TABLE>

                                     -18-
<PAGE>   19
                                   Schedule B

                   Integra Trust Company, National Association
                         Fourth Avenue and Wood Street
                         Pittsburgh, Pennsylvania 15278


        The names of the Directors and the names and titles of the Executive
Officers of Integra Trust Company, National Association and their business
addresses and present principal occupations are set forth below.  If no address
is given, the Director's or Executive Officer's business address is that of
Integra Trust Company National Association, Fourth Avenue and Wood Street,
Pittsburgh, Pennsylvania 15278.  Unless otherwise indicated, each occupation
set forth opposite an individual's name refers to Integra Trust Company
National Association, and each individual is a citizen of the United States.

<TABLE>
<CAPTION>
Name and Business Address                   Present Principal Occupation
- -------------------------                   ----------------------------
<S>                                         <C>
Dr. JoAnne W. Boyle                         President
Seton Hill Drive                            Seton Hill College
Greensburg, PA 15601

John R. Echement                            Chairman, Integra Trust Company,
Four PPG Place                               National Association
Pittsburgh, PA 15222-5408

Dr. Karen Wolk Feinstein                    President
Centre City Tower                           Jewish Healthcare Foundation
Suite 2550
650 Smithfield Street 
Pittsburgh, PA 15222

Dr. Peter Gabriel                           Director/Diagnostic Imaging
500 W. Berkeley Street                      Uniontown Hospital Association
Uniontown, PA 15401

Dr. Thomas Gardner                          Private Investor
P.0. Box 1335
Ponte Vedra Beach, FL 32004

Stephen G. Hartle                           President, Integra Trust Company,
Four PPG Place                               National Association
Pittsburgh, PA 15222-5408

Richard E. Knapp                            Retired Chairman
                                            Landmark Savings Association

Anthony J. Molinero*                        Executive Vice President,
                                            Integra Trust Company,
                                             National Association

Arvid R. Nelson, Jr.                        Mayor of the
City Hall                                   City of Bradford, Pennsylvania
14 Kennedy Street
Bradford, PA 16701

Douglas W. Sherratt*                        Executive Vice President,
                                            Integra Trust Company,
                                             National Association
<FN>

* Not a Director.  All other persons named are Directors of Integra Trust Company, National Association.


</TABLE>
                                     -19-
<PAGE>   20
<TABLE>
<CAPTION>
Name and Business Address                   Present Principal Occupation
- -------------------------                   ----------------------------
<S>                                         <C>
Evans Rose, Jr.                              Director
2900 CNG Tower                               Cohen & Grigsby, P.C.
625 Liberty Avenue
Pittsburgh, PA

Eugene L. Strosser                           Retired President
                                             The Washington Hospital

Richard L. Werner                            Chairman, President and CEO
93 Werner Road                               Werner Co.
Greenville, PA 16125-9499

Alfred W. Wishart, Jr.                       President and Chief Executive Officer
One PPG Place                                The Pittsburgh Foundation
30th Floor
Pittsburgh, PA 15222-5401
</TABLE>

                                     -20-
<PAGE>   21
                                  SCHEDULE C

                          Integra Investment Company
                        Fourth Avenue and Wood Street
                        Pittsburgh, Pennsylvania 15278


  The names of the Directors and the names and titles of the Executive Officers
of Integra Investment Company and their business addresses and present principal
occupations are set forth below. If no address is given, the Director's or
Executive Officer's business address is that of Integra Investment Company,
Fourth Avenue and Wood Street, Pittsburgh, Pennsylvania. Unless otherwise
indicated, each occupation set forth opposite an individual's name refers to
Integra Investment Company, and each individual is a citizen of the United
States.


     Name and Business Address               Present Principal Occupation
     -------------------------               ----------------------------
     Richard B. Mahany                       Vice President, Secretary

     William F. Roemer                       Chairman and Chief
     Four PPG Place                           Executive Officer
     Pittsburgh, PA 15222-5408               Integra Financial Corporation

     Charles R. Skillington                  President
     Four PPG Place
     Pittsburgh, PA 15222-5408

     George P. Warren, Jr.                   Vice President, Assistant
     P.O. Box 7048                            Secretary
     Wilmington, DE 19803

<PAGE>   22

                                  EXHIBIT A


<PAGE>   23


                                      
                                      
                         AGREEMENT AND PLAN OF MERGER
                         ----------------------------
                                      
                                by and between
                                      
                                      
                          NATIONAL CITY CORPORATION,
                                      
                                     and
                                      
                                      
                        INTEGRA FINANCIAL CORPORATION
                                      
                         dated as of August 27, 1995
                                      









<PAGE>   24
                               TABLE OF CONTENTS
                               -----------------
<TABLE>
<CAPTION>
                                                                                                  PAGE
                                                                                                  ----
<S>                                                                                           <C>
I.  THE MERGER

      1.1  Merger                                                                                1
      1.2  Effective Time                                                                        1
      1.3  Effect of Merger                                                                      2
      1.4  Certificate of Incorporation and By-laws                                              2
      1.5  Directors and Officers                                                                2
       (a)  Surviving Corporation                                                                2
       (b)  NCC                                                                                  2
      1.6  Additional Actions                                                                    2

II.  CONVERSION OF SHARES

      2.1  Conversion of Shares                                                                  3
      2.2  Assumption of Employee Stock Options                                                  4
      2.3  Exchange of Certificates
       (a)  Exchange Agent                                                                       5
       (b)  Notice of Exchange                                                                   5
       (c)  Transfer                                                                             5
       (d)  Right to Merger Consideration                                                        6
       (e)  Distribution with Respect to Unexchanged
            Certificates                                                                         6
       (f)  Voting With Respect to Unexchanged Certificates                                      7
       (g)  No Fractional Shares                                                                 7
      2.4  Closing of the Company's Transfer Books                                               7
      2.5  Changes in NCC Common Stock                                                           7

III.  REPRESENTATIONS AND WARRANTIES OF NCC

      3.1  Corporate Organization                                                                8
      3.2  Authority                                                                             8
      3.3  Capitalization                                                                        8
      3.4  Subsidiaries                                                                          9
      3.5  Information in Disclosure Documents,
           Registration Statement, Etc.                                                         10
      3.6  Consents and Approvals; No Violation                                                 11
      3.7  Reports and Financial Statements                                                     12
      3.8 Taxes                                                                                 12
      3.9  Employee Plans                                                                       13
      3.10  Material Contracts                                                                  14

</TABLE>





                                       i
<PAGE>   25
<TABLE>
<CAPTION>                                                                                     PAGE
                                                                                              ----
<S>                                                                                            <C>
      3.11  Absence of Certain Changes or Events                                                15
      3.12  Litigation                                                                          15
      3.13  Compliance with Laws and Orders                                                     15
      3.14  Agreements with Bank Regulators, Etc.                                               15
      3.15  NCC Ownership of Stock                                                              16
      3.16  Accounting Matters                                                                  16
      3.17  Fees                                                                                16
      3.18  NCC and Acquisition Action                                                          16
      3.19  Vote Required                                                                       16
      3.20  Material Interests of Certain Persons                                               17
      3.21  Environmental Matters                                                               17

IV.  REPRESENTATIONS AND WARRANTIES OF IFC

      4.1  Corporate Organization                                                               19
      4.2  Authority                                                                            19
      4.3  Capitalization                                                                       20
      4.4  Subsidiaries                                                                         20
      4.5  Information in Disclosure Documents,
           Registration Statement, Etc.                                                         21
      4.6  Consent and Approvals; No Violation                                                  21
      4.7  Reports and Financial Statements                                                     22
      4.8  Taxes                                                                                22
      4.9  Employee Plans                                                                       23
      4.10  Material Contracts                                                                  24
      4.11  Absence of Certain Changes or Events                                                25
      4.12  Litigation                                                                          25
      4.13  Compliance with Laws and Orders                                                     25
      4.14  Agreements with Bank Regulators, Etc.                                               26
      4.15  Accounting Matters                                                                  26
      4.16  Fees                                                                                26
      4.17  Company Action                                                                      26
      4.18  Vote Required                                                                       27
      4.19  Material Interests of Certain Persons                                               27
      4.20  Environmental Matters                                                               27
</TABLE>





                                       ii
<PAGE>   26
<TABLE>
<CAPTION>
                                                                                              PAGE
                                                                                              ----
<S>                                                                                             <C>
V.  COVENANTS

      5.1  Acquisition Proposals                                                                27
      5.2  Interim Operations of IFC                                                            28
       (a)  Conduct of Business                                                                 28
       (b)  Articles and By-laws                                                                28
       (c)  Capital Stock                                                                       28
       (d)  Dividends                                                                           29
       (e)  Employee Plans, Compensation, Etc.                                                  29
       (f)  Certain Policies                                                                    30
      5.3  Interim Operations of NCC                                                            30
      5.4  Employee Matters                                                                     30
       (a)  Benefit Agreements                                                                  30
       (b)  Retirement Plans                                                                    30
       (c)  General                                                                             30
      5.5  Access and Information                                                               31
      5.6  Certain Filings, Consents and Arrangements                                           31
      5.7  State Takeover Statutes                                                              32
      5.8  Indemnification and Insurance                                                        32
           (a)  Indemnification                                                                 32
           (b)  Insurance                                                                       32
      5.9  Additional Agreements                                                                32
      5.10  Publicity                                                                           33
      5.11  Registration Statement                                                              33
      5.12  Securities Act; Pooling-of-Interests                                                33
      5.13  Stock Exchange Listings                                                             34
      5.14  Proxy                                                                               34
      5.15  Stockholders' Meetings                                                              35
      5.16  Pooling-of-Interests and Tax-Free Reorganization Treatment                          35
      5.17  Provision of Shares                                                                 35

VI.  CLOSING MATTERS

      6.1  The Closing                                                                          35
      6.2  Documents and Certificates                                                           36

VII.  CONDITIONS

      7.1  Conditions to Each Party's Obligations to Effect the Merger                          37
      7.2  Conditions to Obligation of IFC to Effect the Merger                                 38
      7.3  Conditions to Obligation of NCC to Effect the
           Merger                                                                               38
</TABLE>





                                      iii
<PAGE>   27
<TABLE>
<CAPTION>
                                                                                               PAGE
                                                                                               ----
<S>                                                                                             <C>
VIII.  MISCELLANEOUS

      8.1  Termination                                                                          39
      8.2  Non-Survival of Representations, Warranties and
           Agreements                                                                           39
      8.3  Waiver and Amendment                                                                 40
      8.4  Entire Agreement                                                                     40
      8.5  Applicable Law; Consent to Jurisdiction                                              40
      8.6  Certain Definitions; Headlines                                                       40
      8.7  Notices                                                                              41
      8.8  Counterparts                                                                         43
      8.9  Parties in Interest; Assignment                                                      43
      8.10  Expenses                                                                            43
      8.11  Enforcement of the Agreement                                                        44
      8.12  Severability                                                                        44
      Signatures                                                                                44
      Index to Definitions                                                                       i
</TABLE>





                                       iv
<PAGE>   28
                              INDEX TO DEFINITIONS

<TABLE>
<CAPTION>
DEFINITIONS                                                                               SECTIONS
- -----------                                                                               --------
<S>                                                                                 <C>
Acquisition Transaction                                                             Section 5.1
Affiliate                                                                           Section 5.12
Agreement                                                                           Introduction
Articles of Merger                                                                  Section 1.2
BCL                                                                                 Section 1.1
BHCA                                                                                Section 3.1
Benefit Agreements                                                                  Section 3.10
Certificate                                                                         Section 2.3(a)
Closing                                                                             Section 6.1
Closing Date                                                                        Section 6.1
Code                                                                                Introduction
Commission                                                                          Section 3.5
Consents                                                                            Section 7.1(c)
Constituent Corporations                                                            Section 1.2
Control                                                                             Section 8.6(ii)
Certificate of Merger                                                               Section 1.2
DGCL                                                                                Section 1.1

DPC Shares                                                                          Section 2.1(a)
ERISA                                                                               Section 3.9
Effective Time                                                                      Section 1.3
Environmental Law                                                                   Section 3.21
Exchange Act                                                                        Section 3.5
Exchange Agent                                                                      Section 2.3(a)
FRB                                                                                 Section 3.6
Fed Approval Date                                                                   Section 8.6
Governmental Entity                                                                 Section 3.6
HSR Act                                                                             Section 3.6
Hazardous Substance                                                                 Section 3.21
IRS                                                                                 Section 3.9
Indemnitees                                                                         Section 5.8
Loan Portfolio Properties and Other Properties Owned                                Section 3.21
IFC                                                                                 Introduction
IFC Common Stock                                                                    Section 2.1(a)
IFC Contracts                                                                       Section 4.10
IFC Disclosure Letter                                                               Section 4.3
IFC Employee Plans                                                                  Section 4.9
IFC Meeting                                                                         Section 5.15(a)
IFC Option Plans                                                                    Section 2.2
IFC Reports                                                                         Section 4.7
IFC Retirement Plan                                                                 Section 5.4(b)
</TABLE>





                                       i
<PAGE>   29
<TABLE>
<CAPTION>


DEFINITIONS                                                                               SECTIONS
- -----------                                                                               --------
<S>                                                                                 <C>
IFC Subsidiaries                                                                    Section 4.4
Market Price                                                                        Section 2.3(g)
Material Adverse Effect                                                             Section 3.1
Merger                                                                              Section 1.1
Merger Consideration                                                                Section 2.1(a)
NCC                                                                                 Introduction
NCC Common Stock                                                                    Section 2.1(a)
NCC Contracts                                                                       Section 3.10
NCC Disclosure Letter                                                               Section 1.4
NCC Employee Plans                                                                  Section 3.9
NCC Meeting                                                                         Section 5.15
NCC Preferred Stock                                                                 Section 3.3
NCC Reports                                                                         Section 3.7
NCC Retirement Plan                                                                 Section 5.4(b)
Option Agreement                                                                    Section 4.3
PBGC                                                                                Section 3.9
Person                                                                              Section 8.6
Plan of Merger                                                                      Section 1.2
Pooling-of-Interests                                                                Introduction
Proxy Statement                                                                     Section 3.5
Registration Statement                                                              Section 3.5
SBIA                                                                                Section 3.6
Securities Act                                                                      Section 3.5
Significant Subsidiaries                                                            Section 3.4
State Entities                                                                      Section 3.6
Subsidiary                                                                          Section 8.6
Surviving Corporation                                                               Section 1.3
Trust Account Shares                                                                Section 2.1(a)
Unexercised Options                                                                 Section 2.2
</TABLE>





                                       ii
<PAGE>   30
                          AGREEMENT AND PLAN OF MERGER

         THIS AGREEMENT  AND PLAN OF  MERGER, dated as  of August 27,  1995
("Agreement"), is  made by and  between National City  Corporation, a Delaware
corporation ("NCC") and Integra Financial Corporation, a Pennsylvania
corporation ("IFC").

         WHEREAS, NCC and IFC have each determined  that it is in the best
interests of  their respective stockholders for IFC to merge with  and into NCC
upon the terms and subject to the conditions set forth in this Agreement;

         WHEREAS, the respective Boards of Directors of  NCC and IFC have each
approved this  Agreement and the consummation of the  transactions contemplated
hereby and approved the execution and delivery of this Agreement;

         WHEREAS, for  Federal income tax  purposes, it is  intended that the
merger  shall qualify as  a reorganization under  the provisions of Section 368
of the Internal Revenue Code of 1986, as amended (the "Code");

         WHEREAS, for accounting purposes, it is intended that the merger shall
be accounted for as a "pooling-of-interests"; and 

         WHEREAS, as  a condition to, and contemporaneously  with the  
execution of  this Agreement, the parties have  entered into the  Option 
Agreement (as hereinafter defined);

         NOW, THEREFORE,  in consideration of  the foregoing premises and  the
representations, warranties  and agreements contained  herein, the parties
hereto hereby agree as follows:

                                 I.  THE MERGER
                                     ----------
         1.1  MERGER.  Subject  to the terms and conditions  of this Agreement,
at the  Effective Time (as defined  in Section 1.3), IFC will  be merged with
and  into NCC and the separate corporate existence of the IFC  will thereupon
cease (the "Merger") in accordance with the applicable provisions of the
Pennsylvania Business Corporation Law ("BCL") and the Delaware General
Corporation Law ("DGCL").

         1.2   EFFECTIVE  TIME.   As soon  as  practicable after  satisfaction
or  waiver of  all  conditions to  the Merger,  NCC  and IFC  (the "Constituent
Corporations") shall cause a  certificate of merger complying with the
requirements of the DGCL (the " Certificate of  Merger") to be filed with the
Secretary of State of the State of Delaware and the Articles of Merger to be
filed with the




<PAGE>   31
Secretary of State  of the Commonwealth of Pennsylvania ("Articles  of Merger")
pursuant to  the BCL.  The  Merger will become effective  at the time the later
of the following to  occur: (a) the filing of the Certificate of Merger with
the Secretary of State of  the State of Delaware and (b) the filing  of the
Articles of Merger with Secretary  of State of the Commonwealth of Pennsylvania
or such later  time as shall be specified in such filings ("Effective Time").

         1.3  EFFECT OF  MERGER.  The Merger will have the effects specified in
BCL  and DGCL.  Without limiting the generality of the foregoing, NCC will be
the surviving corporation  in the Merger (sometimes hereinafter referred to as
the "Surviving Corporation") and  will continue to be governed by  the laws of
the State of  Delaware, and the  separate corporate  existence of NCC  and all
of its  rights, privileges, powers  and franchises,  public as well  as
private,  and all its  debts, liabilities and  duties as a corporation
organized under the  DGCL, will continue unaffected by the Merger.

         1.4  CERTIFICATE OF INCORPORATION AND BY-LAWS.  The Certificate of
Incorporation  and By-laws of NCC in effect immediately prior to  the Effective
Time, which shall be  in the form set forth  in a disclosure letter executed by
NCC  and dated and delivered by  NCC to IFC as of  the date hereof ("NCC
Disclosure Letter"), shall  be the Certificate of Incorporation  and By-laws of
the  Surviving Corporation, until  amended in accordance with applicable law.

         1.5  DIRECTORS AND OFFICERS.

                (a)  SURVIVING CORPORATION.  The directors and officers of  NCC
         immediately prior to the Effective Time will be the directors and
         officers, respectively, of  the Surviving  Corporation, from and 
         after the Effective Time, until  their successors have  been duly 
         elected or appointed and qualified  or until  their earlier  death,
         resignation or  removal in accordance  with the  terms of  the
         Surviving  Corporation's Certificate of Incorporation
         and By-laws and the DGCL.

                (b)  NCC.   Promptly after the Effective Time, in accordance
         with the Bylaws of NCC, the Board of Directors of NCC shall increase
         its size to such number as is necessary to create 4 vacancies  and
         shall elect 4 IFC directors to fill such vacancies.  The identity of
         the  IFC directors to be elected to NCC's Board of Directors shall be
         mutually agreed upon by IFC and NCC prior to the Effective
         Time.

         1.6   ADDITIONAL ACTIONS.   If, at any time  after the Effective Time,
the  Surviving Corporation shall consider  or be advised that any further
deeds,  assignments or assurances in law  or any other acts  are necessary or
desirable  to (i) vest,  perfect or confirm, of  record or otherwise,





                                       2
<PAGE>   32
in the Surviving  Corporation its right, title  or interest in, to or  under
any of the  rights, properties or assets of  IFC, or (ii) otherwise carry out
the  purposes of this Agreement, IFC and its  officers and directors shall be
deemed to have granted to the  Surviving Corporation an irrevocable power of
attorney to execute and  deliver all such deeds,  assignments or assurances in
law  or any other acts  as are necessary or desirable  to (i) vest, perfect or
conform,  of record or otherwise, in  the Surviving Corporation its right,
title or  interest in, to or under any of  the rights, properties or assets of
IFC or (ii) otherwise  carry out the purposes of this Agreement,  IFC and its
officers and directors shall be  deemed to  have  granted to  the Surviving
Corporation  an irrevocable  power of  attorney to  execute and  deliver  all
such  deeds, assignments or  assurances in law  and to all  acts necessary or
proper to  vest, perfect or  confirm title to and  possession of such  rights,
properties or assets  in the Surviving Corporation and otherwise to carry out
the  purposes of this Agreement, and the officers and directors of the
Surviving Corporation are authorized in the name of IFC or otherwise to take
any and all such action.

                           II.  CONVERSION OF SHARES
                                --------------------
         2.1  CONVERSION OF SHARES.  Subject to Section 2.3, at the Effective
Time,

                (a)  each then-outstanding share of common stock, par value
         $1.00 per share, of IFC ("IFC Common Stock") not owned by NCC  or any
         direct or indirect  wholly-owned subsidiary of NCC (except for any
         such shares  of IFC Common Stock held in  trust accounts, managed
         accounts or in any similar manner as trustee or in a fiduciary
         capacity ("Trust Account Shares") or acquired in satisfaction of debts
         previously contracted ("DPC Shares")) other  than those shares of IFC
         Common Stock  held in the treasury of the IFC, will be canceled,
         retired and converted into two shares of common  stock, par value
         $4.00 per share, of NCC  ("NCC Common Stock").  The number  of shares
         of NCC Common Stock that each share of IFC Common Stock will be
         converted into is sometimes referred to herein as the "Merger
         Consideration";

                (b)   each then-outstanding  share of IFC  Common Stock owned
         by NCC or  any direct or  indirect wholly-owned  subsidiary of NCC
         (except for any shares that are Trust Account Shares or DPC Shares)
         will be canceled and retired;

                (c)  each share of IFC Common Stock issued and held in IFC's
         treasury will be canceled and retired; and





                                       3
<PAGE>   33
                (d)  each  share of common stock,  par value $4.00 per share,
         of NCC issued and  outstanding immediately prior to  the Effective
         Time shall continue to  be an issued and outstanding share  of common
         stock, par  value $4.00 per share,  of the Surviving Corporation from 
         and after the Effective Time.

         2.2  ASSUMPTION  OF EMPLOYEE AND DIRECTOR STOCK OPTIONS.   Except as
expressly provided in this  Section 2.2, all rights under any stock option
granted by  IFC or its predecessors  pursuant to Integra Management Incentive
Plan, Integra Employee Stock Option Plan,  Equimark's 1986 Stock Option Plan,
(Equimark's)1987 Performance Stock  Option Plan, (Equimark's) 1987
Non-Qualified Stock Option  Plan the Equimark  Executive Officer Non-Qualified
Stock Option Plan  Union National Corporation  Employee Stock  Option Plan  and
Pennbancorp Employee  Stock Option  Plan, (collectively,  the "IFC Option
Plans") that  remains unexercised  immediately prior  to the  Effective Time
("Unexercised Options")  shall be assumed by NCC, but shall thereafter
represent the right to acquire that number of shares of  NCC Common Stock to
which the optionee would have been  entitled pursuant  to the conversion  ratio
provided for  in Section  2.1(a) ("Conversion Ratio")  if immediately prior to
the Merger the optionee had fully exercised the option and had  been a
shareholder of record of IFC.   The option price per share of NCC Common Stock
shall  be equal  to the exercise price per  share of the IFC Common Stock
under each option divided by the Conversion  Ratio necessary to assure that the
rights and benefits of the optionee under such option  shall not be increased
or decreased by reason of this Section 2.2, and, in addition, each option which
is an incentive stock option shall be adjusted as required  by section 424 of
the Internal Revenue  Code of 1986 (the "Code"), and the regulations
promulgated thereunder so as not to constitute a modification, extension or
renewal of  the option within the meaning of section 424(h) of the  Code.  On
or before the  Effective Time NCC  shall file, and maintain  the effectiveness
of,  a registration statement  with the Securities and Exchange  Commission
covering the Unexercised Options  and the sale of the  NCC Common Stock issued
upon exercise  of Unexercised Options.   At the Effective  Time all IFC  Option
Plans shall be  terminated with respect  to the granting  of any additional
options or option rights.   The duration and  other terms of the  options shall
be the  same as the original  IFC options, except  that reference to  IFC shall
be deemed to be references to NCC.





                                       4
<PAGE>   34
         2.3  EXCHANGE OF CERTIFICATES.

                (a)   EXCHANGE AGENT.   Prior  to the  Effective Time,  NCC
         shall  designate National  City Bank to  act as  exchange agent  (the
         "Exchange Agent")  and Integra Trust  Company National  Association to
         act  as forwarding agent in  connection with the Merger  pursuant to 
         an exchange agent agreement providing for, among other things,  the
         matters set forth in this  Section 2.3. Except as  set forth herein,
         from and after the Effective Time each holder of a certificate that
         immediately prior to the Effective Time represented outstanding shares
         of  IFC Common Stock ("Certificate") shall be  entitled to receive in
         exchange therefor, upon surrender thereof to the Exchange Agent, the
         Merger Consideration for each share  of IFC  Common Stock so
         represented by the Certificate surrendered by such holder thereof. 
         The certificates representing shares of NCC Common  Stock which
         constitute  the Merger Consideration shall be properly issued  and
         countersigned and executed and authenticated, as appropriate.

                (b)  NOTICE OF EXCHANGE.  Promptly after the Effective Time,
         NCC and the Surviving Corporation shall cause  the Exchange Agent to
         mail and/or make available to each  record holder of a Certificate a 
         notice and letter of transmittal (which shall  specify that delivery
         shall be effected, and risk  of loss and title to the Certificate 
         shall pass, only upon proper delivery  of the Certificate to the 
         Exchange Agent or its  forwarding agent) advising such holder of the
         effectiveness of  the Merger and the procedures to be  used in
         effecting the surrender of the Certificate for  exchange therefor.
         Upon surrender  to the Exchange  Agent of  a Certificate,  together
         with such letter  of transmittal  duly executed and completed in 
         accordance with the instructions thereon, and such other documents as
         may reasonably be requested, the Exchange Agent shall promptly deliver
         to the person entitled thereto the appropriate Merger Consideration
         for each share  of IFC Common Stock so represented by the Certificate
         surrendered by such holder thereof, and such Certificate shall
         forthwith be canceled.

                (c)  TRANSFER.  If delivery of all  or part of the Merger
         Consideration is to be made to a person other than  the person in
         whose name  a surrendered Certificate is registered,  it shall be a
         condition  to such delivery or  exchange that the Certificate
         surrendered shall be properly endorsed or shall be otherwise  in
         proper form for transfer  and that the person requesting  such
         delivery or exchange shall have paid any transfer and other taxes
         required by reason of such delivery or exchange in a name other        
         than that of the registered holder





                                       5
<PAGE>   35
         of the  Certificate surrendered or shall  have established to the 
         reasonable satisfaction of the  Exchange Agent that such  tax either
         has been paid or is not payable.

                (d)   RIGHT TO MERGER CONSIDERATION.  Subject to Subsection
         2.3(e), until surrendered  and exchanged in  accordance with  this
         Section 2.3, each Certificate shall, after the Effective  Time,
         represent solely the  right to receive the  Merger Consideration,
         multiplied by the number of shares  of IFC Common  Stock evidenced by 
         such Certificate, together  with any  dividends or other 
         distributions as provided  in Sections 2.3(e) and 2.3(f), and shall
         have no other  rights. From and after the Effective Time, NCC and
         Surviving Corporation shall  be entitled to treat such  Certificates
         that have not yet been surrendered for exchange as  evidencing the
         ownership of the aggregate Merger Consideration into  which the shares 
         of IFC Common Stock  represented by such  Certificates may be 
         converted, notwithstanding any failure  to surrender such
         Certificates.  One  hundred eighty (180) days following  the Effective
         Time, the Exchange  Agent shall deliver to the Surviving  Corporation
         any shares of NCC Common Stock and funds  (including any interest
         received with respect thereto) which NCC has  made available to the
         Exchange Agent and  which have not  been disbursed  to holders  of
         Certificates,  and  thereafter such holders shall  be entitled  to 
         look to  the Surviving Corporation  (subject to abandoned property,
         escheat or other similar laws)  with respect to the shares of NCC 
         Common Stock and cash in lieu of fractional shares deliverable or
         payable upon due surrender of their Certificates.  Neither Exchange 
         Agent nor any party hereto shall be liable to any  holder of  shares
         of  IFC Common Stock for  any Merger Consideration  (or dividends, 
         distributions or interest with respect  thereto) delivered to a public
         official pursuant to any applicable abandoned property, escheat
         or similar law.

                (e)  DISTRIBUTION WITH RESPECT TO UNEXCHANGED CERTIFICATES.
         Whenever  a dividend or other distribution is declared by NCC on the
         NCC Common Stock, the  record date for which is at or  after the
         Effective Time, the declaration shall include dividends  or other
         distributions on all shares issuable pursuant to  this Agreement,
         provided  that no  dividends or other distributions declared or  made
         with respect to  NCC Common  Stock shall be paid  to the holder of 
         any unsurrendered Certificate with  respect to the share  of NCC
         Common Stock represented thereby until the holder of such Certificate
         shall surrender such Certificate in accordance with this  Article II. 
         The Surviving Corporation shall pay any dividends or make any other    
         distributions with a record date prior to the





                                       6
<PAGE>   36
         Effective Time  which may have been declared or made by  the IFC on
         IFC Common Stock in accordance  with the terms of this Agreement on or
         prior to the Effective Time and which remain unpaid at the Effective
         Time.

                (f)  LOST OR DESTROYED EXCHANGED CERTIFICATES.  In the event
         that any Certificate shall  have been lost, stolen or destroyed, the
         Exchange Agent shall deliver in exchange for  such lost, stolen or
         destroyed certificate, upon the making of an affidavit  of that fact
         by the holder thereof in form satisfactory  to the Exchange Agent, the
         Merger  Consideration, as may be required pursuant to this  Agreement;
         provided, however, that the Exchange Agent may, in  its sole
         discretion and as a condition precedent to the delivery of the Merger
         Consideration to which the holder  of such certificate is entitled as 
         a result of  the Merger,  require the owner  of such lost, stolen  or
         destroyed certificate  to deliver a bond in such sum as it may direct
         as  indemnity against any claim that may be made against IFC, NCC or
         the Exchange Agent or any other party with respect to the certificate
         alleged to have been lost, stolen or destroyed.

                (g)  VOTING WITH RESPECT TO UNEXCHANGED CERTIFICATES.  Holders
         of unsurrendered Certificates will not be entitled to vote at any
         meeting of NCC stockholders.

                (h)  NO FRACTIONAL SHARES.  No certificates or  scrip
         representing fractional shares of NCC Common Stock shall be issued
         upon the surrender for  exchange of a  Certificate or Certificates.  
         No dividends  or distributions of NCC  shall be payable  on or with 
         respect to any fractional share and any such fractional share interest
         will not entitle the owner thereof to vote or to any rights of 
         stockholders of NCC.  In lieu  of any such fractional shares, holders
         of Certificates  otherwise entitled to fractional shares shall be
         entitled to receive promptly from the Exchange Agent a cash payment in
         an amount equal to the fraction of  such share of NCC Common Stock to
         which such holder would  otherwise be entitled multiplied by the
         Market Price.

         2.4   CLOSING OF THE COMPANY'S TRANSFER BOOKS.  The stock transfer
books of IFC shall be closed at the close of business on the business day
immediately  preceding the date of the Effective Time.  In the event of a
transfer of  ownership of IFC Common Stock which is not registered in the
transfer records  of IFC, the Merger Consideration to  be distributed pursuant
to this  Agreement may be delivered to a transferee,  if a Certificate is
presented to the Exchange  Agent, accompanied by all documents required to
evidence and effect such transfer  and by payment of any applicable stock
transfer taxes. NCC and The Exchange Agent shall be entitled





                                       7
<PAGE>   37
to rely upon the stock transfer books of IFC to establish  the identity of
those persons entitled to receive the Merger  Consideration specified in this
Agreement for their  shares of IFC Common Stock, which books shall be
conclusive  with respect to the ownership of such shares.   In the event of  a
dispute with respect  to the ownership of  any such shares,  the Surviving
Corporation and  the Exchange Agent  shall be entitled to deposit any Merger
Consideration represented thereby in escrow with an independent party and
thereafter be relieved with respect to  any claims to such Merger
Consideration.

         2.5  CHANGES IN NCC COMMON STOCK.   If between the date of this
Agreement and  the Effective Time, the shares of NCC Common Stock  shall be
changed  into a different number of shares by reason  of any reclassification,
recapitalization, split-up, combination or exchange of shares, or if a stock
dividend thereon shall be declared with a record date within said period, the
Merger Consideration shall be adjusted accordingly.

                  III.  REPRESENTATIONS AND WARRANTIES OF NCC
                        -------------------------------------
         NCC hereby represents and warrants to IFC that:

         3.1  CORPORATE ORGANIZATION.

             NCC is a corporation  duly organized, validly existing  and in
good standing under the  laws of the State  of Delaware and is  duly qualified
to do business  as a  foreign corporation in  each jurisdiction  in which  its
ownership or lease  of property  or the nature  of the business conducted by
it makes such qualification necessary, except for  such jurisdictions in which
the  failure to be so qualified  would not have a  Material Adverse Effect.
NCC is  registered as a  bank holding  company under the  Bank Holding Company
Act of 1956,  as amended (the "BHCA").  NCC has the requisite corporate power
and authority to own, lease and  operate its properties and assets and to carry
on its  business as it is now being conducted.  NCC has heretofore delivered to
IFC true and complete copies of its certificate of incorporation and by-laws.

         3.2  AUTHORITY.  NCC has the requisite corporate power and authority
to execute and deliver this Agreement and, except for any required approval  of
NCC's stockholders, to  consummate the transactions contemplated by  this
Agreement.  The execution and  delivery of this Agreement and the consummation
of the transactions contemplated  herein  have been duly approved by the Board
of Directors of NCC and no other  corporate proceedings on  the part of NCC
are necessary to authorize  this Agreement or to  consummate the transactions
so  contemplated, subject only to approval by the stockholders of NCC as
provided in Subsection





                                       8
<PAGE>   38
5.15(b).  This Agreement has  been duly executed and delivered by, and
constitutes valid  and binding obligations of NCC enforceable against NCC in
accordance  with its  terms, except  as enforceability  thereof may be  limited
by  applicable bankruptcy,  insolvency, fraudulent  transfer, reorganization,
moratorium  and other similar laws affecting the enforcement of  creditors'
rights generally and except that the availability of the equitable remedy of
specific performance or injunctive relief is subject to the discretion of the
court before which any proceedings  may be brought.

                3.3   CAPITALIZATION.  As of  the date hereof, the authorized
capital  stock of NCC consists  of 350,000,000 shares of NCC Common Stock and
5,000,000 shares of  NCC preferred stock.  As of the close of business  on
August 25, 1995 (i) 147,543,325 shares of  NCC Common Stock were validly
issued and  outstanding,  fully paid  and nonassessable  and (ii)  744,160
shares  of eight  percent  (8%) Cumulative  Convertible Preferred Stock (issued
as 3,720,800  Depository Shares) no par of NCC  ("NCC Preferred Stock") were
validly issued and outstanding,  fully paid and nonassessable.   As of the date
hereof, except  as set forth in this  Section 3.3, pursuant to the exercise  of
employee stock options under NCC's  various stock option plans in effect, NCC's
dividend reinvestment plan and stock  grants made pursuant to the  NCC 1991
Restricted Stock Plan, or set forth in the  NCC Disclosure Letter, there are no
other shares of capital stock of NCC authorized,  issued or outstanding and
there are no  outstanding subscriptions, options,  warrants, rights,
convertible  securities or any other  agreements or commitments  of any
character relating to the issued  or unissued capital stock or other securities
of NCC obligating NCC to issue,  deliver or sell, or cause  to be issued,
delivered  or sold,  additional shares of  capital stock of  NCC or  obligating
NCC  to grant,  extend or enter  into any  subscription, option, warrant,
right, convertible security or other similar  agreement or commitment.  As of
the date hereof, except as provided  in this Agreement or as set forth in the
NCC Disclosure Letter, there are no voting trusts or  other agreements or
understandings to which NCC or any NCC  Subsidiary (as defined herein) is a
party with respect to the voting of the capital stock of NCC. All  of the
shares of  NCC Common Stock  issuable in  exchange for  the IFC Common  Stock
at  the Effective  Time in accordance  with this Agreement and all  of the
shares of  NCC Common Stock issuable  upon exercise of Unexercised  Options
will be, when  so issued, duly authorized, validly issued, fully paid and
nonassessable and will not be subject to preemptive rights.

         3.4  SUBSIDIARIES.   The name and state of incorporation  of each
significant subsidiary (as  defined herein) of NCC  (collectively, the
"Significant Subsidiaries") is set forth in the NCC





                                       9
<PAGE>   39
Disclosure Letter.   Each of the NCC Subsidiaries is  a bank or a corporation
duly organized, validly  existing and  in good standing under the laws of  its
respective jurisdiction  of incorporation or organization  and is duly
qualified  to do business  as a foreign corporation  in each jurisdiction in
which  its ownership or  lease of property or  the nature of  the business
conducted  by it makes such  qualification necessary, except for such
jurisdictions in which the failure to  be so qualified would not have a
Material Adverse Effect.  Each of NCC's subsidiaries has the requisite
corporate power and authority to own, lease and operate its properties and
assets and to carry on its businesses as they are  now being conducted.  Except
as set  forth in the NCC Disclosure Letter, all  outstanding shares of capital
stock of each  of NCC's subsidiaries are owned by NCC or another of NCC's
subsidiaries  and are validly issued, fully paid and (except pursuant to 12
USC Section 55 in the case of each national  bank subsidiary  and applicable
state  law in the  case of  each state bank  subsidiary) nonassessable, are not
subject to preemptive rights and are owned free and clear of all  liens, claims
and encumbrances.  There are no outstanding  subscriptions, options, warrants,
rights, convertible securities  or any other  agreements or  commitments of any
character relating  to the  issued or unissued capital  stock or  other
securities of any  NCC subsidiary obligating  any of  NCC subsidiaries  to
issue, deliver  or sell,  or cause  to be issued,  delivered or  sold
additional shares  of its  capital stock  or obligating  any of  NCC's
subsidiaries to  grant, extend  or enter into  any subscription,  option,
warrant, right, convertible security or other similar agreement or commitment.

         3.5  INFORMATION IN DISCLOSURE DOCUMENTS, REGISTRATION STATEMENT, ETC.
None of the information with respect to NCC  or any of NCC's subsidiaries
provided by NCC for inclusion in (i) the Registration  Statement to be filed
with the  Securities and Exchange  Commission (the "Commission")  by NCC on
Form S-4 under the  Securities Act of  1933, as amended  (the "Securities
Act"), for  the purpose of registering the shares of  NCC Common Stock to be
issued in the Merger (the "Registration Statement") and (ii) any  joint proxy
statement of IFC and NCC ("Proxy Statement") required to be mailed  to IFC's
and NCC's stockholders in connection with the Merger will, in the case of the
Proxy Statement or any amendments or supplements thereto, at the time of the
mailing  of the Proxy Statement and any amendments  or supplements thereto,
and at the time  of the IFC Meeting  and the NCC Meeting  (as defined herein),
or, in the  case of the Registration Statement, at the time  it becomes
effective, contain any  untrue statement of a material  fact or omit to state
any material fact required to be stated therein or necessary in order to make
the statements therein, in light of the circumstances under which





                                       10
<PAGE>   40
they  are made,  not misleading.   The  Registration Statement  will comply  as
to  form in  all material  respects with  the provisions  of the Securities
Act and the rules and regulations promulgated thereunder.  The Proxy Statement
will comply as to form in all material respects with the provisions of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules
and regulations promulgated thereunder.

         3.6   CONSENTS AND APPROVALS; NO  VIOLATION.  Except as set  forth in
the NCC  Disclosure Letter, neither the  execution and delivery of this
Agreement  by NCC  or the  transactions contemplated  hereby  will (a)
conflict with  or result  in any  breach of  any provision  of its certificate
of incorporation or  by-laws, (b) violate, conflict with, constitute a  default
(or an event which, with notice or lapse  of time or both,  would constitute a
default) under, or result in the termination  of, or accelerate the performance
required by, or result in the creation of any lien or other  encumbrance upon
any of the properties or assets of NCC  or any of NCC's subsidiaries under, any
of  the terms, conditions or provisions of any note, bond, mortgage, indenture,
deed of trust, license, lease, agreement  or other instrument or obligation to
which NCC or any  of NCC's  subsidiaries is  a party  or to  which they  or any
of their  respective properties  or assets are  subject, except  for such
violations, conflicts, breaches, defaults, terminations, accelerations or
creations  of liens or other encumbrances, which are set forth in  the NCC
Disclosure Letter or which, individually or in the aggregate, will not have a
Material  Adverse Effect or (c) require any consent, approval, authorization
or permit of or from, or filing with  or notification to, any court,
governmental authority or other regulatory or administrative agency  or
commission, domestic or foreign ("Governmental Entity"), except  (i) pursuant
to the Exchange Act and the Securities Act, (ii) filing the Certificate  of
Merger  and a  designation pursuant to  the DGCL,  (iii) filing  the Articles
of Merger,  (iv) filings  required under  the securities or  blue sky laws of
the various states, (v) filings  under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR  Act"), (vi)  filings with,  and
approval  by, the  Federal Reserve  Board (the  "FRB"), (vii)  filings with,
and approvals  by, the  Ohio Superintendent of Banks,  the Pennsylvania
Department of Financial Institutions, and the Arizona Director of Insurance
(collectively, the "State Entities"), (viii) filings and approvals  pursuant to
any applicable  state takeover law,  (ix) filings and approvals  under the
Small  Business Investment Act  of 1958  and the  rules and  regulations
thereunder ("SBIA")  or (x)  consents, approvals, authorizations,  permits,
filings  or notifications which, if not obtained or made will not, individually
or in the aggregate, have a Material Adverse Effect.





                                       11
<PAGE>   41
         3.7  REPORTS AND FINANCIAL STATEMENTS.  Since January 1, 1990, NCC and
each of NCC's subsidiaries have filed all reports, registrations and
statements, together with any required amendments thereto, that they were
required to file with the Commission under  Section 12(b), 12(g), 13(a) or
14(a) of the Securities  Exchange Act of 1934,  including, but not  limited to
Forms 10-K,  Forms 10-Q and  proxy statements (the "NCC Reports").  NCC has
previously furnished or will promptly  furnish IFC with true  and complete
copies of each of  NCC's annual reports on  Form 10-K  for the years 1990
through 1994 and  its quarterly reports on  Form 10-Q for March  31, 1995 and
June  30, 1995.  As  of their respective dates, the NCC Reports complied with
the requirements  of the Commission and did not contain any untrue statement of
a material fact  or omit to state a material fact required to be stated therein
or  necessary to make the statements therein, in light of the circumstance
under which  they were made, not misleading.   The audited consolidated
financial statements and unaudited interim financial statements of NCC included
in the NCC Reports  have been  prepared in  accordance with  generally accepted
accounting  principles applied  on a  consistent basis  (except as  may be
indicated therein or in the notes thereto) and fairly present the  consolidated
financial position of NCC and NCC's subsidiaries as of the dates thereof and
the results of their operations and changes in cash flows for the  periods then
ended subject, in the case of the unaudited  interim financial  statements,  to
normal  year-end  and audit  adjustments  and  any other  adjustments
described therein. There exist  no material liabilities of NCC and its
consolidated subsidiaries, contingent or otherwise of  a type required to be
disclosed in accordance  with generally accepted accounting practices, except
as disclosed in the NCC Reports.  NCC's reserve for possible loan losses as
shown  in its Quarterly Report on Form 10-Q for the fiscal quarter  ended June
30, 1995 was adequate, within the meaning  of generally accepted accounting
principles and  safe and sound banking practices.

         3.8 TAXES.   NCC will promptly  make available to IFC, upon request
by IFC, true and correct copies of the federal, state and local income tax
returns, and state and local property and sales tax returns and any other tax
returns filed by NCC and any of NCC's subsidiaries for each of the fiscal
years that remains open, for examination or assessment of tax.  NCC and each
NCC subsidiary have prepared in good faith and duly and timely filed, or
caused to be duly and timely filed, all federal, state, local and foreign
income, estimated tax, withholding tax, franchise, sales and other tax returns
or reports required to be filed by them on or before the date hereof, except to
the extent that all such failures to file, taken together, would not have a
Material Adverse Effect.  NCC and each of its subsidiaries have paid, or have
made adequate provision or set up an





                                       12
<PAGE>   42
adequate accrual or reserve for  the payment of, all taxes, shown or required
to be  shown to be owing on all such returns  or reports, together with  any
interest, additions or  penalties related to any  such taxes or to  any open
taxable year or period.   Except as set  forth in the NCC Disclosure Letter,
neither NCC nor any  of NCC's subsidiaries has consented to extend the statute
of limitations with respect to the assessment of any  tax.   Except as  set
forth  in the  NCC Disclosure  Letter, neither  NCC nor  any of  NCC's
subsidiaries is  a party  to any  action or proceeding, nor  to the best of
NCC's knowledge is  any such action or proceeding threatened, by any
Governmental  Entity in connection with the determination, assessment  or
collection  of  any taxes,  and no  deficiency  notices or  reports have  been
received  by NCC  or  any of  NCC's subsidiaries in respect of any material
deficiencies for any tax, assessment, or government charges.

         3.9   EMPLOYEE PLANS.   All employee  benefit, welfare, bonus,
deferred compensation, pension,  profit sharing, stock  option, employee stock
ownership, consulting, severance, or fringe  benefit plans, formal or informal,
written or oral, and all trust agreements related thereto, relating  to any
present  or former directors, officers  or employees of  NCC or its
subsidiaries ("NCC Employee Plans")  have been maintained, operated, and
administered in substantial compliance  with their terms and  currently comply,
and  have at all relevant times  complied, in all material  respects with the
applicable requirements of the Employee  Retirement Income Security Act of
1974, as amended ("ERISA"), the Code, and any other applicable laws.  With
respect to each NCC  Employee Plan which is a pension plan (as  defined in
Section 3(2) of ERISA):  (a)  except for  recent amendment(s) to the plans  not
materially affecting the qualified status of  the plans (which are disclosed
in, and copies of which are attached to,  the NCC Disclosure  Letter), each
pension plan  as amended (and any  trust relating thereto) intended  to be a
qualified plan under Section 401(a)  of the Code  either: (i)  has been
determined  by the Internal  Revenue Service ("IRS")  to be  so qualified, (ii)
is the subject of a  pending application for such determination that was timely
filed, or (iii) will be submitted for such a determination prior to end of the
"remedial amendment period" within  the meaning of Section 401(b) of the Code,
(b) there is no accumulated funding deficiency (as defined in  Section 302 of
ERISA and Section  412 of the Code), whether or not  waived, and no waiver of
the  minimum funding standards of such sections has been  requested from the
IRS, (c) neither NCC nor any of  its subsidiaries has provided, or is required
to provide, security to any pension plan  pursuant to Section 401(a)(29) of
the Code, (d) the fair market  value of the assets of each defined  benefit
plan (as defined in Section 3(35) of ERISA) exceeds the value of the "benefit
liabilities" within the meaning of Section 4001(a)(16)





                                       13
<PAGE>   43
of ERISA under such  defined benefit plan as of the end of the most recent
plan year thereof ending prior to the date hereof, calculated on the basis  of
the actuarial  assumptions used in the most  recent actuarial valuation for
such defined benefit plan  as of the  date hereof, (e) no reportable event
described in Section  4043 of ERISA for which the 30 day reporting requirement
has not been waived has occurred, (f) except as disclosed  in the NCC
Disclosure Letter, no defined benefit  plan has been terminated, nor has the
Pension Benefit Guaranty Corporation ("PBGC") instituted proceedings  to
terminate  a defined  benefit plan  or to appoint  a trustee  or administrator
of  a defined  benefit   plan, and  no circumstances exist that constitute
grounds  under Section 4042(a)(2) of ERISA entitling  the PBGC to institute any
such proceedings and  (g) no pension plan is a "multiemployer plan"  within the
meaning of Section 3(37) of ERISA.  Neither  NCC nor any of its subsidiaries
has incurred any liability  to the  PBGC with respect  to any "single-employer
plan" within  the meaning of  Section 4001(a)(15) of ERISA  currently or
formerly maintained by any entity  considered one employer with  it under
Section 4001 of  ERISA or Section 414 of the  Code, except for premiums  all of
which have been paid  when due.  Neither  NCC nor any of its  subsidiaries has
waived any  withdrawal liability with respect to a  multiemployer plan under
Subtitle E of  Title IV of ERISA.  Neither NCC nor any of  its subsidiaries has
any obligations for retiree health  and life benefits under  any NCC  Employee
Plan,  except as  set forth in  the NCC Disclosure  Letter.   There are  no
restrictions  on the  rights of NCC  or its subsidiaries to amend or terminate
any such NCC Employee Plan without incurring any liability thereunder.

         3.10  MATERIAL CONTRACTS.  Except as set forth in the NCC Disclosure
Letter or disclosed in the NCC Reports, neither NCC nor any of its subsidiaries
is a  party to, or is bound or affected  by, or receives benefits under  (a)
any employment, severance, termination,  consulting or retirement  agreement
(collectively, "Benefit  Agreements") providing for aggregate  payments to any
person in any  calendar year  in excess of $100,000, (b) any  material
agreement, indenture or other instrument relating to the borrowing of money by
NCC or any of its subsidiaries or the guarantee by  NCC or  any of  its
subsidiaries of  any such  obligation (other  than trade  payables and
instruments  relating to borrowings  or guaranties made in the ordinary course
of business) or (c) any  other contract or agreement or amendment  thereto that
would be required  to be filed as an exhibit  to a Form 10-K  filed by NCC with
the  Commission as of the  date of this Agreement  (collectively, the "NCC
Contracts").  Neither NCC  nor any of NCC's  subsidiaries is in  default under
any of the  NCC Contracts, which default  is reasonably likely to  have, either
individually or





                                       14
<PAGE>   44
in  the aggregate, a Material Adverse Effect  and there has not occurred any
event that with the lapse of  time or the giving of notice or both would
constitute such a default.  Except as set forth in the NCC Disclosure Letter,
neither NCC nor any of NCC's subsidiaries is a party to,  or is bound by, any
collective  bargaining agreement, contract, or other agreement  or
understanding with a labor union or labor  organization, nor is NCC or any of
NCC's subsidiaries the subject  of a proceeding asserting that it or any such
subsidiary has committed an unfair labor practice or seeking to compel  it or
such subsidiary to bargain with  any labor organization as to wages  and
conditions of employment, nor  is there any strike or other labor dispute
involving it or any of its subsidiaries pending or threatened.

         3.11 ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as set forth in
the NCC Disclosure Letter  or disclosed in the NCC Reports filed by NCC with
the Commission prior to the date of this Agreement, since December 31, 1994,
there has  not been any change in the financial condition, results of
operations or business of NCC and its subsidiaries which would or in the future
will have a Material Adverse Effect.

         3.12 LITIGATION.  Except  as disclosed in the NCC Reports filed by
NCC with the Commission prior to the date of  this Agreement, there is no suit,
action or  proceeding pending, or, to the knowledge of NCC, threatened against
or affecting NCC  or any of NCC's subsidiaries which, if  decided adversely  to
NCC,  would be  reasonably  expected to  result in  a  Material Adverse
Effect, nor  is there  any judgment,  decree, injunction,  rule or order  of
any Governmental Entity  or arbitrator, outstanding  against NCC or  any of
NCC's subsidiaries  having, or which, insofar as reasonably can be foreseen, in
the future would have, a Material Adverse Effect.

         3.13 COMPLIANCE WITH LAWS AND ORDERS.   Except as set forth in the NCC
Disclosure  Letter or disclosed in the NCC Reports filed by  NCC with the
Commission prior to  the date of this Agreement, the businesses  of NCC and of
NCC's subsidiaries are  not being conducted in violation of any law, ordinance,
regulation, judgment, order, decree, license or  permit of any Governmental
Entity (including, without limitation, in the case of  NCC's subsidiaries that
are banks,  all statutes, rules  and regulations  pertaining to the  conduct of
the banking business and  the exercise of trust  powers), except for violations
which individually or in the aggregate  do not, and, insofar as reasonably can
be foreseen, in the future will not,  have a Material Adverse  Effect.  Except
as set  forth in the NCC  Disclosure Letter, no investigation   or review by
any Governmental  Entity with  respect to  NCC or  any of  NCC's subsidiaries
is  pending or,  to the  knowledge of  NCC,  threatened, nor  has any
Governmental Entity indicated an intention to





                                       15
<PAGE>   45
conduct the same in each case other than those the outcome of which will not
have a Material Adverse Effect.

         3.14 AGREEMENTS WITH BANK  REGULATORS, ETC.  Neither NCC  nor any NCC
subsidiary is a  party to any written agreement or  memorandum of understanding
with, or a party to  any commitment letter, board resolution or similar
undertaking to, or is subject  to any order or directive by,  or is  a
recipient of  any extraordinary supervisory  letter from,  any Governmental
Entity  which restricts materially the  conduct of its business, or  in any
manner relates to its capital adequacy, its credit  or reserve policies or its
management, nor  has NCC been advised by any Governmental Entity that  it is
contemplating issuing or requesting  (or is considering the  appropriateness of
issuing or  requesting) any such order, decree, agreement, memorandum  of
understanding, extraordinary supervisory letter, commitment letter  or similar
submission.  Neither NCC nor any of  NCC's subsidiaries is   required by
Section  32 of the  Federal Deposit Insurance  Act ("FDIA") to  give prior
notice to a  Federal banking  agency of the proposed addition of  an individual
to its  board of directors or  the employment of an individual  as a senior
executive officer. NCC knows of no reason why the regulatory approvals referred
to in Subsection 3.6(c) should not be obtained.

         3.15 NCC OWNERSHIP OF STOCK.   As of the date of this  Agreement,
neither NCC nor any of its affiliates  or associates (i) beneficially owns,
directly or indirectly, or (ii) are parties to  any agreement, arrangement or
understanding for the purpose of acquiring, holding, voting or disposing  of,
IFC  Common Stock  (other than  DPC Shares or  Trust Account  Shares), which
in the  aggregate, represent  5% or more  of the outstanding shares of IFC
Common Stock.

         3.16 ACCOUNTING MATTERS.   Neither NCC  nor, to its best  knowledge,
any of  its affiliates, has, through  the date of this  Agreement, taken or
agreed to take any action or knows of any reason that with respect to NCC and
its affiliates would prevent NCC from accounting for the business combination
to be effected by the Merger as a "pooling-of-interests."

         3.17 FEES.   Except for the fees paid  and payable to Merrill Lynch &
Co.,  neither NCC nor any of NCC's  subsidiaries has paid or will become
obligated to pay any  fee or commission to any broker, finder  or intermediary
in connection with  the transactions contemplated by this Agreement.

         3.18 COMPANY ACTION.  The Board of Directors  of NCC (at a meeting
duly called, constituted and held) has by the requisite vote of all directors
present (a) determined that the Merger is advisable and in the best interests
of NCC and its stockholders and (b) approved this





                                       16
<PAGE>   46
Agreement  and the  transactions contemplated  by  this Agreement  and has
directed that  the Merger  be submitted  for consideration  by NCC's
stockholders  at the NCC Meeting.   The Board of Directors of  NCC has approved
the  transactions contemplated by this  Agreement and the Option Agreement such
that the provisions of  Section 203 of the DGCL any  other applicable state
business combination or  anti-takeover provisions of NCC Certificate of
Incorporation or By-laws shall not be triggered by the Merger or any
transactions contemplated by this Agreement.

         3.19 VOTE REQUIRED.   The affirmative vote of the holders of a
majority of  the outstanding shares of NCC Common Stock entitled to vote
thereon  is the only vote of  the holders of any class or  series of NCC
capital stock necessary to  approve this Agreement and the transactions
contemplated herein.

         3.20 MATERIAL INTERESTS OF CERTAIN  PERSONS.  Except as disclosed in
NCC's Proxy Statement for its 1995 Annual Meeting of Stockholders, no officer
or director of NCC,  or any "associate" (as such term is defined in Rule  14a-1
under the 1934 Act) of any such  officer or director, has any  material
interest in  any material  contract or  property (real  or personal), tangible
or intangible, used  in or  pertaining to  the business of NCC or any of its
subsidiaries.

         3.21 ENVIRONMENTAL MATTERS.  For purposes of this Agreement, the
following terms shall have the indicated meanings:

                "ENVIRONMENTAL  LAW" means any federal, state or local law,
         statute, ordinance, rule, regulation, code, license, permit,
         authorization, approval, consent, order, determination, judgment,
         decree, injunction or agreement with any  governmental entity relating
         to (1) the health, protection, preservation or restoration of the
         environment including, without limitation, air, water vapor, 
         surface water, groundwater, drinking water supply, surface soil,
         subsurface soil, wetlands, plant and animal life or any other natural
         resource, conservation, and/or (2) the use, storage, recycling, 
         treatment, generation, transportation, processing, handling, labeling,
         production, release or  disposal of Hazardous Substances.   The term
         Environmental Law includes without limitation (1) the Comprehensive
         Environmental Response, Compensation and Liability Act, as amended, 42
         U.S.C. Section 9601, ET SEQ.; the Superfund Amendments and
         Reauthorization Act of 1986, 42 U.S.C. 9601(2)(D); the Resource 
         Conservation and Recovery Act, as amended, 42 U.S.C. Section 6901,  ET
         SEQ.; the Clean Air Act, as amended, 42 U.S.C. Section 7401, ET SEQ.;
         the Federal Water Pollution Control Act, as amended by the Clean Water
         Act, 33 U.S.C. Section 1251, ET SEQ.; the  Toxic Substances
         Control Act, as amended, 15 U.S.C. Section





                                       17
<PAGE>   47
         9601, ET SEQ.; the Emergency Planning and Community Right  to Know
         Act, 42 U.S.C. Section 11001, ET SEQ.; the Safe Drinking Water Act, 42
         U.S.C.  Section 300f, ET SEQ.; and all comparable state and local
         laws, and (2) any common law (including without limitation common law
         that may impose strict liability) that may impose liability for
         injuries or damages due to  the release of any Hazardous Substance.

                "HAZARDOUS SUBSTANCE" means (i) any hazardous  wastes, toxic
         chemicals, materials, substances or wastes as defined by  or for the
         purposes of any Environmental Law; (ii) any "oil", as defined by the
         Clean Water Act, as amended from  time to time, and regulations
         promulgated thereunder (including crude oil or any fraction thereof
         and  any petroleum products or derivatives thereof);  (iii) any
         substance, the presence of  which is prohibited, regulated or
         controlled by any applicable federal, state or local laws,
         regulations, statutes or ordinances now in force or hereafter
         enacted relating to waste disposal or environmental protection with 
         respect to the exposure to, or manufacture, possession, presence, use,
         generation, storage, transportation, treatment, release, emission,
         discharge, disposal, abatement, cleanup, removal, remediation or
         handling of any such substance;  (iv) any asbestos  or
         asbestos-containing materials, polychlorinated biphenyls ("PCBs") in 
         the form of electrical equipment, fluorescent light fixtures with
         ballasts, cooling oils or any other form, urea formaldehyde,
         atmospheric radon;  (v) any solid, liquid, gaseous or thermal
         irritant or contaminant, such as smoke, vapor, soot, fumes, 
         alkalis, acids, chemicals, pesticides, herbicides, sewage,
         industrial sludge or other similar wastes; (vi) industrial, nuclear
         or medical by-products; (vii)  any lead based paint or coating and
         (viii) any underground storage tank(s).

                "LOAN PORTFOLIO PROPERTIES, TRUST  PROPERTIES AND OTHER
         PROPERTIES" means any  real property, appurtenances, rights and 
         personal property attendant thereto, which is owned, leased  as a
         landlord or a tenant, managed or operated or upon which is held  a
         mortgage, deed of trust or other security interest by NCC or IFC, as
         the case  may be, or any of their subsidiaries whether directly, as
         an agent, as trustee or other fiduciary or otherwise.

                Except as set forth in the NCC Disclosure Letter, (i) to the
         best of NCC's knowledge, neither NCC nor  any of its subsidiaries is
         in violation of or has  any liability, absolute or contingent, in
         connection with or under any Environmental Law, except any such
         violations or liabilities which would not reasonably  be expected,
         individually or in  the aggregate, to have a Material Adverse
         Effect; (ii) to the best of NCC's knowledge,





                                       18
<PAGE>   48
         none of  the Loan Portfolio Properties, Trust Properties and  
         Other Properties of NCC or its subsidiaries is in violation of or 
         has any liability, absolute or contingent, under any Environmental 
         Law, except any such violations or liabilities which, individually
         or in the aggregate would not have a Material Adverse Effect; and
         (iii) to the best of NCC's knowledge, there are no actions, suits,
         demands, notices, claims, investigations or proceedings pending or
         threatened relating to any Loan Portfolio Properties, Trust
         Properties and Other Properties including, without limitation any
         notices, demand letters or requests for information from any federal
         or state environmental agency relating to any such liability under
         or violation of Environmental Law, which would impose a liability
         upon NCC or its subsidiaries pursuant to any Environmental Law,
         except such as would not, individually or in the aggregate have a
         Material Adverse Effect.

                   IV.  REPRESENTATIONS AND WARRANTIES OF IFC
                        -------------------------------------
         IFC hereby represents and warrants to NCC that:

         4.1  CORPORATE ORGANIZATION.   IFC is  a corporation  duly organized,
validly existing  and in good standing under the laws of the Commonwealth
of Pennsylvania and is duly qualified to do business as a foreign corporation
in  each jurisdiction in which its ownership or lease of property  or the
nature of the business  conducted by  it makes such  qualification necessary,
except for such  jurisdictions in  which the failure to be so qualified would
not have a Material Adverse  Effect.  IFC is registered as a bank holding
company under the BHCA.  IFC  has the requisite corporate power and  authority
to own, lease  and operate its properties and  assets and to carry on its
business as it is  now being conducted.  IFC has heretofore delivered to NCC
true and complete copies of its Articles of Incorporation and By-laws.

         4.2   AUTHORITY.   IFC has  the requisite  corporate power and
authority to  execute and deliver  this Agreement  and, except  for  any
required approval of IFC's  shareholders, to consummate the transactions
contemplated by such.  The execution and delivery of this Agreement and the
consummation  of the transactions  contemplated herein  have been duly approved
by the  Board of Directors  of IFC  and no other  corporate proceedings on  the
part of IFC  are necessary to authorize  this Agreement or to  consummate the
transactions so  contemplated, subject only to approval by the shareholders  of
IFC as provided in Section 5.15.  This Agreement has been duly  executed and
delivered by, and constitute valid and binding obligations of IFC, enforceable
against IFC in accordance with its terms, except as the enforceability thereof
may be





                                       19
<PAGE>   49
limited  by applicable bankruptcy, insolvency, reorganization, fraudulent
transfer, moratorium and  other similar laws affecting the enforcement of
creditors' rights generally  and except that the availability of the equitable
remedy of specific performance or injunctive relief is subject to the
discretion of the court before which any proceedings may be brought.

         4.3  CAPITALIZATION.  As of the  date hereof, the authorized capital
stock of IFC consists of 100,000,000 shares of IFC Common Stock and 19,642,631
shares of preferred stock, no par value.  As of the close of business on August
25, 1995, 32,913,023 shares  of IFC Common Stock were validly issued and
outstanding, fully  paid and nonassessable and no  shares of preferred stock
were issued  or outstanding.  As of  the date of this  Agreement except as set
forth in  this Section 4.3 or in a  disclosure letter executed by IFC and
dated and delivered by IFC to NCC as of the date hereof ("IFC Disclosure
Letter"),  and except for a Stock Option Agreement by and  between NCC and IFC,
dated August 27,  1995 ("Option Agreement") or pursuant to IFC's Option Plans,
there  are no shares of capital stock of IFC authorized, issued or  outstanding
and  there are no outstanding subscriptions, options, warrants,  rights,
convertible securities or any other agreements  or commitments of any character
relating to the  issued or unissued capital stock or other securities of IFC
obligating IFC to issue, deliver or sell,  or cause to be issued, delivered or
sold, additional shares of capital stock of IFC or  obligating IFC to grant,
extend or  enter into any subscription, option, warrant, right, convertible
security or other similar agreement or commitment.   Except as set forth in the
IFC Disclosure Letter, there are no voting trusts or other agreements or
understandings to which IFC or any of IFC's subsidiaries is a party with
respect to the voting of  the capital stock of IFC.  As  of the date of  this
Agreement, there were outstanding under  the IFC Option Plans  options to
purchase 999,330  shares of IFC Common Stock, which IFC stock  options had an
average exercise  price of $33.31  and for which  adequate shares of  IFC
Common  Stock have been  reserved for issuance under the IFC Option Plans.
Since January 31, 1995, IFC has not granted or awarded any IFC Stock Options.

         4.4   SUBSIDIARIES.  The IFC Disclosure Letter sets forth  the name
and state of incorporation of  each subsidiary of IFC (collectively, "IFC
Subsidiaries").  Each of IFC Subsidiaries is  a bank or a corporation duly
organized, validly existing and  in good standing under the laws of  its
respective  jurisdiction  of incorporation  or organization  and is  duly
qualified to  do business  as a  foreign corporation  in each jurisdiction  in
which its  ownership or lease of  property or the nature  of the business
conducted by it makes  such qualification necessary, except for such
jurisdictions in which the failure to be so qualified would not have a Material
Adverse





                                       20
<PAGE>   50
Effect.  Each of IFC  Subsidiaries has the requisite corporate  power and
authority to own, lease and  operate its properties and assets  and to carry on
its businesses as they are now being conducted.   Except as set forth in  the
IFC Disclosure Letter, all outstanding shares of capital stock  of each IFC
Subsidiary is owned by IFC or another IFC Subsidiary and are validly issued,
fully paid and nonassessable, are not subject to preemptive rights  and are
owned free  and clear  of all  liens, claims and  encumbrances.   There are no
outstanding subscriptions,  options, warrants, rights,  convertible securities
or  any other agreements or  commitments of any  character relating to the
issued  or unissued capital stock or other securities of  any IFC Subsidiary
obligating any  IFC Subsidiary to issue, deliver or  sell, or cause to be
issued, delivered or sold additional shares of its capital stock or  obligating
any IFC Subsidiary to grant, extend or enter  into any subscription, option,
warrant, right, convertible security or other similar agreement or commitment.

         4.5   INFORMATION IN  DISCLOSURE DOCUMENTS,  REGISTRATION STATEMENT,
ETC.   None of  the information  with respect  to IFC  or any  IFC Subsidiary
provided by IFC for inclusion in the  Proxy Statement or the Registration
Statement will,  in the case of the Proxy Statement or any amendments or
supplements thereto, at the time of the mailing of the Proxy Statement and any
amendments or supplements thereto, and at  the time of the IFC Meeting  and the
NCC Meeting,  or, in the case of  the Registration Statement, at the time  it
becomes effective, contain  any untrue statement of  material fact or  omit to
state any material  fact required to  be stated therein  or necessary  in order
to  make the statements therein, in  light of the circumstances under which
they are made, not  misleading.  The Proxy Statement will comply  as to form in
all material respects with the provisions of the Exchange Act and the rules and
regulations promulgated thereunder.

         4.6  CONSENT AND APPROVALS; NO VIOLATION.   Except as set forth in the
IFC Disclosure Letter neither the execution  and delivery of this Agreement by
IFC nor  the consummation by  IFC of the transactions  contemplated hereby will
(a) conflict with or result  in any breach of  any provision of its  Articles
of Incorporation or  By-laws, (b) violate,  conflict with, constitute  a
default (or an  event which, with notice  or lapse of time or both, would
constitute a default) under, or result  in the termination of, or accelerate
the performance required by, or result in the creation of  any lien or other
encumbrance upon any  of the properties or  assets of IFC  or any of IFC
Subsidiaries under, any of  the terms,  conditions or  provisions of any  note,
bond,  mortgage, indenture,  deed of  trust, license,  lease, agreement  or
other  instrument or obligation to which IFC or  any IFC Subsidiary is a party
or to which they  or any of their respective properties or assets  are subject,
except for such violations, conflicts, breaches, defaults, terminations,
accelerations or





                                       21
<PAGE>   51
creations of liens or other encumbrances, which are set forth in the IFC
Disclosure Letter or which, individually or in the aggregate, will  not have a
Material Adverse Effect or (c) require any consent, approval, authorization or
permit of or  from, or filing with or notification to, any Governmental Entity,
except  (i) pursuant to  the Exchange Act and  the Securities Act,  (ii) filing
the  Certificate of Merger pursuant  to the DGCL, (iii) filing the Articles of
Merger, (iv)  filings required under the securities or blue sky laws of the
various states,  (v) filing under the HSR  Act, (vi)  filings with,  and
approval  by, the FRB,  (vii) filings  with, and approvals  by, the  State
Entities,  (viii) filings  and approvals pursuant to any applicable state
takeover law, (ix) filings and  approvals under the SBIA or (x) consents,
approvals,  authorizations, permits, filings or notifications which, if not
obtained or made will not, individually or in the aggregate, have a Material
Adverse Effect.

         4.7   REPORTS AND FINANCIAL STATEMENTS.   Since January 1, 1990, IFC
and  each IFC Subsidiary have  filed all reports, registrations and statements,
together with any  required amendments thereto,  that they were required  to
file with  the Commission under Sections 12(b),  12(g), 13(a) or 14(a)  of the
Securities Exchange  Act of 1934,  including, but not limited  to Forms 10-K,
Forms 10-Q and proxy statements  (the "IFC Reports").  IFC has previously
furnished or will promptly furnish NCC with true and  complete copies of each
of IFC annual reports on Form  10-K for the years 1990 through 1994 and its
quarterly  reports on Form 10-Q for March 31, 1995 and June 30, 1995.  As of
their respective dates, IFC Reports complied  with the  requirements of the
Commission and  did not contain  any untrue  statement of a  material fact  or
omit  to state a material fact required  to be stated therein  or necessary to
make the statements  therein, in light of  the circumstance under which  they
were made, not misleading.   The audited  consolidated financial statements
and unaudited interim  financial statements of  IFC included in  the IFC
Reports  have been  prepared  in accordance  with generally  accepted
accounting  principles applied  on a  consistent basis  (except as  may be
indicated therein or in the  notes thereto) and fairly present the  financial
position of IFC  and IFC Subsidiaries taken as  a whole as at  the dates
thereof and the consolidated results of their operations and changes in cash
flows for the periods then ended subject, in the case of the unaudited interim
financial statements, to normal  year-end and audit adjustments and any  other
adjustments described therein.  There  exist no material liabilities of  IFC
and its consolidated subsidiaries,  contingent or otherwise of a  type required
to be disclosed in  accordance with generally  accepted accounting  practices,
except as  disclosed in  the IFC Reports.   IFC's reserve  for possible loan
losses as  shown in its Quarterly Report on Form





                                       22
<PAGE>   52
10-Q for the fiscal quarter ended June 30, 1995 was adequate, within the
meaning of  generally accepted accounting principles and safe and sound banking
practices.

         4.8  TAXES.  IFC  will promptly make available to NCC, upon request by
NCC, true and correct copies of the  federal income tax returns, state income
tax returns, and  state sales tax returns filed by IFC and IFC Subsidiaries
for each of the fiscal years that remains  open, as of the date hereof, for
examination  or assessment of tax.  IFC and each IFC Subsidiary  have prepared
in good faith and duly and  timely filed, or caused to be duly and timely
filed, all federal, state, local  and foreign income, franchise, sales and
other tax returns or reports required to be filed by  them on or  before the
date  hereof, except to the  extent that all  failures to file,  taken
together, would  not have a  Material Adverse Effect.   IFC and each  IFC
Subsidiary have paid,  or have made  adequate provision or  set up an  adequate
accrual  or reserve for  the payment of, all  taxes shown  or required to  be
shown to  be owing on  all such returns or  reports, together with  any
interest, additions  or penalties related to any such taxes or to  any open
taxable year or period.  Except  as set forth in the IFC Disclosure Letter,
neither IFC nor any  IFC Subsidiary has consented to extend  the statute of
limitations with respect to  the assessment of any tax.   Except as set forth
in the IFC  Disclosure Letter, neither IFC nor any  of IFC Subsidiaries is a
party to  any action or proceeding, nor to  the best of IFC's knowledge is any
such  action or proceeding  threatened, by any  Governmental Entity in
connection with the  determination, assessment or  collection of any taxes, and
no deficiency notices or  reports have been received by  IFC or any of IFC
Subsidiaries in  respect of any material deficiencies  for any tax, assessment,
or government charge.

         4.9  EMPLOYEE PLANS.   Except as set forth in  the IFC Disclosure
Letter, all  employee benefit, welfare, bonus,  deferred compensation, pension,
profit sharing, stock  option, employee stock ownership, consulting,
severance,  or fringe benefit plans, formal or  informal, written or oral and
all trust  agreements related thereto, relating to any present or former
directors, officers or employees of IFC or IFC Subsidiaries ("IFC  Employee
Plans") have been  maintained, operated, and administered  in substantial
compliance with their terms  and currently comply, and have at  all relevant
times complied,  in all material respects  with the applicable requirements  of
ERISA, the Code,  and any other applicable laws.  Except as set forth in the
IFC Disclosure Letter,  with respect to each IFC Employee Plan which is a
pension plan (as defined in  Section 3(2)  of ERISA):   (a) except  for recent
amendment(s) to  the plans  not materially  affecting the  qualified status  of
the  plans (which are disclosed in the IFC Disclosure Letter, and  copies of
which were previously made available to NCC), each pension plan as amended (and
any trust





                                       23
<PAGE>   53
relating thereto)  intended to be a qualified plan under Section 401(a) of the
Code either has been  determined by the IRS to be so qualified or is the
subject of  a pending application  for such  determination that was timely
filed, (b)  there is no  accumulated funding  deficiency (as defined in Section
302 of ERISA and Section  412 of the Code), whether or  not waived, and no
waiver  of the minimum funding  standards of such sections has been requested
from the  IRS, (c) neither IFC nor any of the IFC Subsidiaries  has provided,
or is required to provide, security to any pension  plan pursuant to Section
401(a)(29) of the Code, (d) the  fair market value of the assets of  each
defined benefit plan (as defined in Section 3(35)  of ERISA) exceeds the value
of the "benefit liabilities" within the meaning of Section 4001(a)(16) of ERISA
under such defined benefit plan  as of the  end of the most  recent plan year
thereof  ending prior to the  date hereof, calculated  on the basis  of the
actuarial assumptions used in  the most recent actuarial valuation for such
defined benefit plan  as of the date hereof, (e) no reportable event described
in Section 4043  of ERISA for which the  30 day  reporting requirement has  not
been waived has occurred,  (f) no defined benefit  plan has been terminated,
nor  has the Pension Benefit Guaranty Corporation ("PBGC") instituted
proceedings to terminate  a defined benefit plan or to appoint a  trustee or
administrator  of a defined benefit  plan, and no  circumstances exist that
constitute grounds under Section  4042(a)(2) of ERISA entitling  the PBGC to
institute any such proceedings and (g)  no pension plan is a "multiemployer
plan"  within the meaning of Section 3(37) of ERISA.  Neither IFC nor any IFC
Subsidiary has  incurred any liability to the PBGC with respect to any
"single-employer plan" within the meaning of  action 4001(a)(15) of ERISA
currently  or formerly maintained by any entity considered  one employer with
it under  Section 4001 of ERISA or Section 414 of the Code,  except for
premiums all of which  have been paid when due.  Neither IFC  nor any of its
subsidiaries has  incurred any withdrawal liability with  respect to a
multiemployer plan under  Subtitle E of Title IV  of ERISA.  Neither IFC nor
any IFC Subsidiary has any obligations for  retiree health and life benefits
under any IFC Employee Plan,  except as set forth in the IFC  Disclosure
Letter.  There are no restrictions on  the rights  of IFC  or IFC  Subsidiaries
to  amend or  terminate any  such IFC  Employee Plan  without incurring any
liability thereunder.

         4.10 MATERIAL CONTRACTS.  Except  as set forth in the IFC  Disclosure
Letter or disclosed in the  IFC Reports, neither IFC nor any  IFC Subsidiary is
a party to, or is bound or affected by, or receives benefits under (a) any
Benefit Agreements providing for  aggregate payments to any person in any
calendar year in excess of $100,000, (b) any material agreement, indenture or
other





                                       24
<PAGE>   54
instrument relating to the borrowing of money by IFC or any IFC Subsidiary or
the guarantee by IFC or any IFC  Subsidiary of any such obligation (other than
trade payables and instruments relating to transactions entered into in the
ordinary course of business)  or  (c) any other contract or agreement  or
amendment thereto that would be required to be  filed as an exhibit to a  Form
10-K filed by IFC with  the Commission as of the date  of this Agreement
(collectively,  the "IFC Contracts").   Neither IFC nor any IFC Subsidiary  is
in default under  any IFC Contract, which default is reasonably likely to have,
either  individually or in the aggregate, a Material Adverse Effect, and there
has  not occurred any event that with the lapse of time or the giving of notice
or both would constitute such a default.  Except as set forth in  the IFC
Disclosure Letter, neither IFC nor  any of IFC  Subsidiary is a party  to, or
is  bound by, any  collective bargaining agreement, contract,  or other
agreement  or understanding with  a labor union or labor organization, nor is
IFC or  any IFC Subsidiary the subject of a  proceeding asserting that is or
any IFC Subsidiary has committed an unfair labor practice  or seeking to compel
it or such  subsidiary to bargain with any labor organization  as to wages and
conditions of employment, nor is there any strike or other labor dispute
involving it or any IFC Subsidiary pending or threatened.

         4.11 ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as set forth in
the IFC Disclosure Letter  or disclosed in IFC Reports filed by IFC with the
Commission  prior to the date of this  Agreement, since December 31,  1994,
there has not  been any change in the  financial condition, results of
operations or business of IFC and IFC Subsidiaries which would or in the future
will have a Material Adverse Effect.

         4.12  LITIGATION.  Except as disclosed in IFC Reports filed by IFC
with the Commission prior to the date of this Agreement, there is no suit,
action or proceeding pending, or, to the knowledge of IFC, threatened against
or affecting IFC or any IFC Subsidiary which,  if determined adversely to IFC,
would be reasonably expected  to have a Material Adverse Effect, nor is there
any judgment, decree,  injunction, rule or order of  any Governmental  Entity
or  arbitrator, outstanding  against IFC  or any  IFC Subsidiary  having, or
which, insofar  as reasonably  can be foreseen, in the future would have, a
Material Adverse Effect.

         4.13 COMPLIANCE WITH LAWS AND ORDERS.  Except  as set forth in the
IFC  Disclosure Letter or as disclosed in  IFC Reports filed by IFC with the
Commission prior to the date of this Agreement, the businesses of IFC and IFC
Subsidiaries  are not being conducted in violation of any law, ordinance,
regulation, judgment, order, decree, license or permit  of any  Governmental
Entity (including, without limitation,  in the case of IFC Subsidiaries that
are banks, all statutes,





                                       25
<PAGE>   55
rules  and regulations  pertaining to  the conduct  of the  banking business
and the  exercise of  trust powers),  except for  violations which individually
or in  the aggregate do not, and, insofar as  reasonably can be foreseen, in
the future will not, have a  Material Adverse Effect.  Except as  set forth  in
the  IFC Disclosure  Letter, no investigation  or review  by any  Governmental
Entity  with respect  to IFC or  any IFC Subsidiary  is pending or, to  the
knowledge of IFC  threatened, nor has any Governmental Entity  indicated an
intention to  conduct the same in each case other than those the outcome of
which will not have a Material Adverse Effect.

         4.14 AGREEMENTS WITH BANK REGULATORS, ETC.  Neither IFC nor  any IFC
Subsidiary is a party  to any written agreement or memorandum  of understanding
with, or a  party to any commitment letter,  board resolution or similar
undertaking  to, or is subject to any order  or directive by,  or is  a
recipient of  any extraordinary supervisory  letter from,  any Governmental
Entity  which restricts materially the  conduct of its business, or in any
manner relates to its capital adequacy, its credit or  reserve policies or its
management, except for those the existence of which has  been disclosed in the
IFC Disclosure Letter, nor has IFC  been advised by any Governmental Entity
that it is contemplating issuing or requesting (or  is considering the
appropriateness of issuing or  requesting) any such  order, decree, agreement,
memorandum of understanding, extraordinary supervisory letter, commitment
letter  or similar submission, except as set  forth in the IFC Disclosure
Letter.  Neither  IFC nor any IFC  Subsidiary is required  by Section 32 of
the Federal Deposit  Insurance Act to  give prior notice  to a Federal banking
agency of the proposed addition of an individual  to its board of directors or
the employment of an  individual as a senior or executive officer.   IFC  knows
of no reason why the regulatory approvals referred to in Subsections 4.6(c)
should not be obtained.

         4.15  ACCOUNTING MATTERS.  Neither  IFC nor, to  its best knowledge,
any  of its affiliates,  has, through the date  of this Agreement, taken or
agreed to take any action or knows of  any reason that with respect to IFC and
its affiliates would prevent NCC from accounting for the business combination
to be effected by the Merger as a "pooling-of-interests."

         4.16 FEES.  Except for fees  paid and payable to Morgan and Stanley &
Co., neither IFC nor any IFC Subsidiary has paid  or will become obligated  to
pay  any  fee or  commission to  any broker,  finder  or intermediary  in
connection  with the  transactions contemplated  by this Agreement.

         4.17 COMPANY ACTION.  The Board  of Directors of IFC (at a meeting
duly called, constituted and  held) has by the requisite vote of all directors
present (a) determined that the





                                       26
<PAGE>   56
Merger is  advisable and in  the best  interests of IFC  and its  shareholders,
(b)  approved this Agreement and  the transactions  contemplated hereby,
including the Merger, and (c) has directed that the Merger be submitted for
consideration by the IFC's shareholders at the IFC Meeting.

         4.18 VOTE REQUIRED.  The affirmative votes  of a majority of the votes
cast of  IFC Common Stock entitled to vote thereon are the  only votes of the
holders  of any class or series of IFC  capital stock necessary to approve this
Agreement and the  transactions contemplated by the Agreement.

         4.19 MATERIAL INTERESTS OF CERTAIN PERSONS.  Except as  disclosed in
IFC's Proxy Statement for its 1995 Annual  Meeting of Shareholders or as set
forth in  the IFC Disclosure Letter, no officer  or director of IFC, or any
"associate" (as such term is defined  in Rule 14a-1 under the 1934 Act) of  any
such officer or director, has any material interest in any material  contracts
or property (real or personal), tangible or intangible, used in or pertaining
to the business of IFC or any IFC Subsidiaries.

    4.20   ENVIRONMENTAL MATTERS. (i) To  the best of IFC's  knowledge, neither
IFC nor  any of its subsidiaries  is in violation of  or has any liability,
absolute or contingent,  in connection with or under any Environmental Law,
except any such violations or liabilities which would not reasonably  be
expected, individually or in the aggregate, to have  a Material Adverse Effect;
(ii) to the  best of IFC's knowledge, none of the Loan  Portfolio Properties,
Trust Properties and  Other Properties of IFC or its  subsidiaries is in
violation of or has any liability, absolute or  contingent, under any
Environmental Law, except any such violations  or liabilities which,
individually or in the aggregate would not have a Material Adverse  Effect; and
(iii) to  the best of IFC's  knowledge, there are  no actions, suits, demands,
notices,  claims, investigations or proceedings pending  or  threatened
relating to  any  Loan Portfolio  Properties, Trust  Properties  and  Other
Properties  including,  without limitation  any notices,  demand letters  or
requests  for information  from any  federal or  state  environmental agency
relating to  any such liability under or  violation of Environmental Law, which
would impose a liability upon  IFC or its subsidiaries pursuant to  any
Environmental Law, except such as would not, individually or in the aggregate
have a Material Adverse Effect.

                                 V.  COVENANTS
                                     ---------
         5.1  ACQUISITION PROPOSALS.   Each of IFC and IFC Subsidiaries shall
not, directly or indirectly, and shall instruct  and otherwise use its best
efforts to cause their respective officers,





                                       27
<PAGE>   57
directors,  employees, agents or advisors  or other representatives or
consultants  not to, directly or indirectly, (i)  solicit or initiate any
proposals  or offers from any person   relating to any acquisition or purchase
of  all or a material amount of  the assets of, or any securities of, or any
merger, consolidation or  business combination with, IFC  or any of  IFC
Subsidiaries (such  transactions are referred to  herein as "Acquisition
Transactions") or (ii)  except to the extent  that the Board  is required, in
a written opinion of  counsel to the  Board, in the exercise of its fiduciary
duties  in accordance with applicable law, to  participate in any discussions
or negotiation regarding, or  furnish to any other person  any information with
respect to, an Acquisition Transaction; PROVIDED, HOWEVER, that nothing
contained in this Section  5.1 shall restrict  or prohibit any  disclosure by
IFC  that is required  in any  document to be  filed with the  Commission after
the  date of this Agreement or any  disclosure that, in  the written opinion
of counsel to  the Board of  Directors of the  Company, is otherwise required
under applicable law.   IFC will immediately cease and  cause to be terminated
any  existing activities, discussions or negotiations with  any parties
conducted heretofore with respect to any  of the foregoing.  IFC will notify
NCC immediately if any such inquiries or proposals are received by, any such
information is requested from, or any such negotiations or discussions are
sought to be initiated or continued with IFC.

         5.2  INTERIM OPERATIONS OF IFC.   During  the period from  the date
of  this Agreement  to the Effective  Time, except as  specifically
contemplated by this  Agreement, set forth in the  IFC Disclosure Letter or  as
otherwise approved expressly  in writing by NCC  (which approval will not be
unreasonably withheld):

                (a)  CONDUCT OF BUSINESS.  IFC shall, and shall cause each of
         IFC Subsidiaries to, conduct their respective businesses only in, and
         not take any action except in, the ordinary course  of business
         consistent with past practice.  IFC shall use reasonable efforts to
         preserve intact the business organization of IFC and each of  IFC
         Subsidiaries, to keep available the services of its and their present
         key  officers and employees and to preserve the goodwill of those
         having business relationships with IFC or IFC Subsidiaries. Other 
         than in the ordinary course of  business consistent with  past
         practice,  IFC shall not (i) incur any indebtedness for borrowed money
         (it being understood and agreed that incurrence of indebtedness in the
         ordinary course of business  shall include,  without limitation,  the
         creation  of deposit liabilities,  purchases of  federal funds, sales 
         of certificates  of deposit  and entering into repurchase agreements),
         (ii)  assume, guarantee, endorse or otherwise  as an accommodation
         become responsible for the obligations of any





                                       28
<PAGE>   58
         other individual, corporation or other entity, or (iii) make any loan 
         or advance other than in the ordinary course of business  consistent
         with past practice;

                (b)  ARTICLES AND BY-LAWS.  IFC shall not  and shall not
         permit any IFC Subsidiary  to make any  change or amendment to  their
         respective articles of incorporation or by-laws (or comparable
         governing instruments).

                (c)  CAPITAL STOCK.  IFC shall not, and shall not permit any
         IFC Subsidiary to, issue or sell any shares of capital stock or any
         other securities of any of them (other than pursuant  to outstanding
         exercisable stock options granted pursuant to one of the IFC  Option
         Plans) or issue  any securities convertible  into or  exchangeable
         for, or  options, warrants  to purchase,  scrip, rights to subscribe 
         for, calls  or commitments  of any character whatsoever relating to,
         or enter  into any contract, understanding or arrangement with respect
         to the issuance of, any shares  of capital stock or any other
         securities of any of them (other than pursuant to  the IFC Option
         Plans) or enter into any arrangement or contract  with respect to  the
         purchase or  voting of shares of  their capital stock,  or adjust,
         split,  combine or reclassify any  of their capital stock or other
         securities  or make any other changes in their capital structures. 
         Neither IFC nor  any IFC Subsidiaries shall grant any additional stock
         options  under any IFC Option Plans.   Subject to any restrictions 
         imposed by applicable law  or regulations IFC will  use its best
         efforts to purchase in the open market an  equivalent number of shares
         as are issued in connection with outstanding stock options which are
         exercised between the date of the Agreement and the Closing Date.

                (d)  DIVIDENDS.  IFC shall not and  shall not permit any IFC
         Subsidiary to, declare, set aside, pay or make any dividend or other
         distribution or payment (whether in cash,  stock or property) with
         respect to, or purchase or redeem,  any shares of the capital stock of
         any of them other than (a) regular quarterly cash dividends in an
         amount not to exceed $.50 per share of IFC Common Stock payable on the
         regular historical payment dates  and (b) dividends  paid by  any IFC
         Subsidiary  to another IFC  Subsidiary or  IFC with respect to  its
         capital  stock between the  date hereof  and the Effective Time. It
         is agreed  by the parties  hereto that  they will cooperate  to assure 
         that, during any quarter, there shall not be a duplication of nor      
         omission of payment of dividends to shareholders of IFC.

                (e)  EMPLOYEE PLANS, COMPENSATION, ETC.   Without NCC's  prior
         consent, which consent  shall not be  unreasonably withheld,  IFC
         shall not, and shall not permit any IFC Subsidiary to, adopt or amend
         (except as required by law) any bonus, profit sharing,





                                       29
<PAGE>   59
         compensation, severance, termination, stock option, pension,
         retirement, deferred compensation, employment  or  other 
         employee  benefit agreements, trusts, plans, funds or other 
         arrangements for the benefit or welfare of any director,  officer or
         employee, or (except for  normal merit increases in the  ordinary
         course of business consistent with past practice) increase the
         compensation or fringe benefits of any director, officer  or employee
         or pay any benefit  not required by any existing plan or arrangement
         (including,  without limitation, the granting of stock options or
         stock appreciation rights) or take  any action or grant any benefit
         not required under the terms of  any existing agreements, trusts,
         plans, funds or other such arrangements or enter into any contract,
         agreement, commitment or arrangement to do any of the foregoing.

                (f)   CERTAIN POLICIES.  IFC will modify  and change its loan,
         litigation, real estate  valuation asset, liquidity and investment
         portfolio policies and practices (including loan classifications  and
         level of reserves) prior to the Effective Time so as to be consistent
         on a mutually satisfactory basis with those of NCC and generally
         accepted accounting principles,  at the earlier of (i) such time as
         NCC acknowledges that  all conditions  to  its obligations to 
         consummate  the Merger  set  forth in  Sections 7.1  and 7.3 have been 
         waived  or satisfied  or (ii) immediately prior to  the Effective
         Time.  IFC's representations,  warranties or covenants contained in
         this Agreement shall not be deemed to be untrue or breached in any
         respect for any purpose as a consequence of any such
         modifications or changes.

         5.3  INTERIM OPERATIONS OF NCC.  During the period from the  date of
this Agreement to  the Effective Time, without the  prior written consent of
IFC,  NCC will not declare or  pay any extraordinary or special dividend  on
the NCC Common Stock  or take any action  that would (a) materially  delay or
adversely affect the ability of NCC  to obtain any approvals of Governmental
Authorities required to permit consummation of the  Merger or (b)  materially
adversely affect its  ability to perform  its obligations under  this Agreement
or to  consummate the transaction contemplated hereby.

         5.4  EMPLOYEE MATTERS.

                (a)  BENEFIT AGREEMENTS.  Surviving Corporation agrees that
         it shall honor, on and after the Effective Time, without deduction,
         counterclaims, interruptions or  deferment (other than withholding
         under applicable  law), all vested benefits of any person  under all
         plans or agreements.





                                       30
<PAGE>   60
                (b)  RETIREMENT PLANS.   NCC  shall credit  employees of  IFC
         and  IFC Subsidiaries  who become  employees of  NCC or  Surviving
         Corporation as a result of  the Merger with all service with IFC or
         any of  IFC Subsidiaries for purposes of eligibility and vesting  as
         if such service had been  performed for  NCC but  not for  purposes of
         benefit  accrual, provided, however, that  this provision  shall not
         change  the treatment under the National City Non-Contributory 
         Retirement Plan and Trust  of service with NCC or any of  NCC's
         subsidiaries prior to  the Closing Date.

                (c)  GENERAL.  Upon and after the Merger, IFC employees shall
         have benefits that in the aggregate  are no less favorable than the
         benefits enjoyed generally by NCC employees working in similar
         business lines.

         5.5  ACCESS AND INFORMATION.  Upon reasonable notice, each of the
parties shall (and shall  cause each of the parties' subsidiaries to) afford to
the other parties  and their representatives  (including, without limitation,
directors,  officers and employees  of the parties  and their affiliates,  and
counsel, accountants and  other professionals retained)  such access during
normal  business hours throughout  the period prior to  the Effective  Time to
the books,  records (including,  without limitation,  tax returns  and work
papers of  independent auditors), properties, personnel and to such other
information as any  party may reasonably request; PROVIDED, HOWEVER, that no
party shall be required  to provide access to  any such information if the
providing of such access (i) would  be reasonably likely, in the  written
opinion of counsel, to result in the  loss or impairment of any privilege
generally recognized under law with respect to such information  or (ii) would
be precluded by any  law, ordinance, regulation, judgment,  order, decree,
license or  permit of any  Governmental Entity.  All information  furnished by
one party to  any of the others in connection with  this Agreement or the
transactions contemplated hereby shall be  kept confidential by such other
party (and shall be used by it only in  connection with this Agreement and the
transactions contemplated hereby) except to the extent  that such information
(i)  already is known to such other party when received from a source not known
by  the receiving party to be under an obligation of confidentiality,  (ii)
thereafter becomes lawfully  obtainable from other sources  or (iii) is
required to be  disclosed in any non-confidential document  filed with  the
Commission,  the FRB,  the Department  of  Justice or  any other  agency or
any government.   In  the event  that the transactions contemplated  by this
Agreement shall  fail to  consummate, each party  shall promptly cause  all
copies  of documents or  extracts thereof containing information and data as to
another party hereto to be returned to the party which furnished the same or
destroyed.





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<PAGE>   61
         5.6   CERTAIN FILINGS, CONSENTS AND ARRANGEMENTS.    NCC and IFC
shall  (a) as  soon as  practicable  make any  required filings  and
applications required to be filed  with Governmental Authorities between the
date  of this Agreement and the Effective Time, (b)  cooperate with one another
(i) in promptly determining whether any other  filings are required to be made
or consents, approvals, permits or authorizations are required to be  obtained
under any  other relevant federal, state  or foreign law or  regulation and
(ii) in  promptly making any  such filings, furnishing information required  in
connection therewith and  seeking timely to obtain  any such consents,
approvals, permits  or authorizations and (c) deliver to the  other parties to
this Agreement  copies of the publicly available portions  of all such reports
promptly  after they are filed.

         5.7  STATE TAKEOVER STATUTES.  IFC shall take all reasonable steps to
(i) exempt  IFC and the Merger from the requirements of any state takeover  law
by action of the Company's  Board of Directors or otherwise and (ii),  upon the
request of NCC, assist  in any challenge by NCC to the applicability to the
Merger of any state takeover law.

         5.8  INDEMNIFICATION AND INSURANCE.

                (a)  INDEMNIFICATION.  From  and after the Effective Time, NCC
         will assume and honor any obligation as provided for and permitted by
         applicable federal and  state law IFC had immediately prior to  the
         Effective Time with respect to the  indemnification of each person who
         is now, or  has been at any  time prior to the  date hereof or who 
         becomes prior to  the Effective Time, a  director or officer of IFC 
         or any IFC Subsidiary or was serving at the request of  IFC as a
         director, officer of any  domestic or foreign corporation joint 
         venture, trust, employee benefit  plan or  other enterprise 
         (collectively, the  "Indemnitees") arising  out  of  IFC's Articles of 
         Incorporation  or By-Laws  or  any indemnification  (to the maximum 
         extent available  thereunder and  permitted by  applicable law or 
         regulation) against any and  all Losses in connection with or arising 
         out of any claim which is based upon, arises out of  or in any way
         relates to any actual  or alleged act or omission occurring at or
         prior to the Effective Time in  the Indemnitee's capacity as a
         director or officer (whether elected or appointed), of IFC or any IFC
         Subsidiary.  This Section 5.8 will be construed as an agreement, as to 
         which the Indemnitees are intended to be third-party beneficiaries.

                 (b)   INSURANCE.  For a period  of three years after  the
         Effective Time, NCC  shall use all reasonable  efforts to  maintain in
         effect current directors' and officers' liability





                                       32
<PAGE>   62
         insurance in an aggregate limit of $35 million, which will insure
         IFC's directors and officers  for events which occurred prior to the
         Effective Time but were undiscovered at the Effective Time; provided,
         however, that in no event shall NCC be  obligated to expend, in order
         to maintain or provide insurance coverage pursuant to  this Subsection
         5.8(b), any amount per annum in excess of  150% of the amount of the
         annual premium paid as of the date hereof by NCC for its current
         director's and officers' liability insurance.

         5.9   ADDITIONAL AGREEMENTS.   Subject  to the  terms and  conditions
herein  provided, each  of the  parties hereto  agrees to use  its reasonable
efforts to take promptly, or  cause to be taken promptly, all  actions and to
do promptly, or cause  to be done promptly, all things necessary,  proper  or
advisable  under  applicable laws  and regulations  to  consummate and  make
effective as  promptly  as  practicable the transactions  contemplated by this
Agreement, including  using its  best efforts to  obtain all  necessary actions
or non-actions, extensions, waivers, consents and  approvals from  all
applicable  Governmental Entities, effecting  all necessary  registrations,
applications and  filings (including, without  limitation, filings  under  any
applicable  state securities  laws) and  obtaining any  required  contractual
consents  and regulatory approvals.

        5.10   PUBLICITY.   The initial press release announcing this  
Agreement shall be a joint press release and  thereafter IFC and NCC shall
consult  with each other  in issuing any press  releases or otherwise  making
public statements with respect to  the transactions contemplated hereby and in
making any filings with any Governmental Entity or with any national securities
exchange with respect thereto. 

        5.11   REGISTRATION STATEMENT.   NCC shall  prepare and file  the
Registration Statement  with the  Commission as soon  as is reasonably
practicable following receipt  of final comments from  the Staff of the
Commission on the Proxy Statement (or  advice that such Staff  will not review
such filing) and shall use all reasonable efforts to have the Registration
Statement declared effective  by the Commission as promptly as practicable  and
to maintain the effectiveness of such Registration Statement.   NCC shall also
take any action required to be taken under state blue sky or securities  laws
in connection with  the issuance of the NCC  Common Stock pursuant to  the
Merger, and IFC   shall furnish NCC  all information  concerning IFC and the
holders of its capital stock and  shall take any action as NCC may reasonably
request in connection with any such action.





                                       33
<PAGE>   63
         5.12 SECURITIES ACT; POOLING-OF-INTERESTS.

                (a)  Prior  to the Effective Time,  IFC shall identify to  NCC
         all persons who  were, at the time  of the IFC Meeting  (as herein
         later defined), possible  "affiliates" of IFC  as that term is  used
         in paragraphs (c) and (d)  of Rule 145  under the  Securities Act (at 
         the minimum, all those persons subject to  the reporting requirements 
         of Rule 16(a)  under the Exchange Act) and  for purposes of 
         qualifying for "pooling-of-interests"  accounting treatment (the
         "Affiliates").

                (b)  IFC shall  use its best efforts to  obtain a written
         agreement  from each person who  is identified as a  possible
         Affiliate pursuant to clause (a) above providing that  such person
         will not sell, pledge, transfer or otherwise dispose  of any shares of
         IFC Common Stock held by  such "affiliate" and  the Merger
         Consideration to  be received by such  "affiliate" in the Merger:  
         (1) in  the case of  shares of NCC Common Stock only, except in
         compliance with  the applicable provisions of the Securities Act and
         the rules and regulations  thereunder; and (2) during  the periods
         during which any such  sale, pledge, transfer or other disposition 
         would, under generally accepted accounting principles or the  rules,
         regulations  or interpretations of the  Commission, disqualify  the
         Merger  for "pooling-of-interests" accounting treatment.   The parties
         understand that such periods  in general encompass the period
         commencing thirty (30) days prior to the Merger  and ending at the
         time of the publication  of financial results covering at least 30 
         days of combined operations of  NCC and IFC within the meaning  of
         Section 201.01 of the Commission's Codification of Financial 
         Reporting Policies. NCC  shall file such  financial results within 90
         days of the Effective Time. IFC shall deliver such written agreements
         to NCC at or prior to the Effective Time.

         5.13  STOCK  EXCHANGE LISTINGS.   NCC shall  use its  best efforts  to
list  on the New  York Stock  Exchange, upon  official notice of issuance, the
NCC Common Stock to be issued pursuant to the Merger.

         5.14 PROXY.  As soon as practicable after the date hereof, IFC and NCC
shall prepare the Proxy Statement, file it with  the Commission, respond to
comments of the Staff of the Commission, clear the Proxy Statement with the
Staff of the Commission  and promptly thereafter mail the Proxy Statement  to
all holders  of shares  of IFC  Common Stock and NCC  Common Stock.   NCC and
IFC shall  cooperate with  each other in  the preparation of the Proxy
Statement.





                                       34
<PAGE>   64
         5.15 STOCKHOLDERS' MEETINGS.

                (a)  IFC shall  take all action necessary, in accordance  with
         applicable law and its  Articles of Incorporation and  By-laws, to
         convene a special meeting of  the holders of IFC Common Stock (the
         "IFC Meeting") as promptly as practicable for the purpose of
         considering and taking  action upon this Agreement.   Unless  the
         Board  of Directors  of IFC shall  have received the written  advice
         of  counsel, reasonably acceptable to NCC,  to the effect that making
         such a recommendation  would cause the Board  of Directors of IFC to
         violate its  fiduciary duty under applicable law  and provided that
         such advice is not  predicated solely upon the price of NCC Common
         Stock, the  Board of Directors of IFC shall recommend that the holders
         of the IFC Common Stock vote in favor of and approve the Merger and
         adopt this Agreement at the IFC Meeting.

                (b)  NCC shall take all action necessary, in accordance with
         applicable law and its certificate of incorporation and by-laws, to
         convene a meeting of the holders of NCC Common  Stock (the "NCC
         Meeting") for the purpose of considering and  taking action upon this
         Agreement. The Board of Directors of NCC shall recommend that holders
         of NCC Common Stock vote in favor of and approve the  Merger and
         adopt this Agreement at the NCC Meeting.

         5.16 POOLING-OF-INTERESTS AND TAX-FREE REORGANIZATION TREATMENT.
Neither NCC nor IFC  shall intentionally take or cause  to be taken any
action, whether before or after the Effective Time, which  would disqualify the
Merger as a  "pooling of interests" for accounting purposes or as a
"reorganization" within the meaning of Section 368 of the Code.

         5.17  PROVISION OF SHARES.  NCC  shall issue and  provide the shares
of  NCC Common Stock  deliverable upon the  conversion of the IFC Common Stock
pursuant to this  Agreement, and will provide the cash to be paid in  lieu of
fractional shares of NCC Common Stock  as provided in Subsection 2.3(f).   The
shares of NCC Common Stock to be issued  and exchanged for shares of IFC Common
Stock pursuant to this Agreement will, at the Effective Time, be duly
authorized, validly issued, fully paid and nonassessable and subject to no
preemptive rights.

                              VI.  CLOSING MATTERS
                                   ---------------
         6.1   THE CLOSING.  Subject to  satisfaction or waiver  of all
conditions precedent set  forth in Article  VII of this  Agreement, the closing
("Closing") at such location mutually agreeable to the parties and on a date
("Closing Date") which is the first business day after the later of:





                                       35
<PAGE>   65
                (a) the first date on which the Merger may be consummated in    
         accordance with the approvals of any Governmental Entities or

                (b) the date the required approvals of IFC's shareholders and
         NCC's stockholders have been obtained.

If all conditions are determined to be satisfied in all material respects (or
are duly waived)  at the Closing, the Closing shall be consummated by the
making of all necessary filing required by all Governmental Entities.

         6.2  DOCUMENTS AND CERTIFICATES.   NCC and IFC shall use their
respective best  efforts, on or prior to Closing, to  execute and deliver all
such instruments, documents or certificates as may be necessary or advisable,
on the advice of counsel, for the consummation at the Closing of the
transactions contemplated by this Agreement to occur as soon as practicable.

                                VII.  CONDITIONS
                                      ----------
         7.1  CONDITIONS TO EACH PARTY'S OBLIGATIONS TO EFFECT THE MERGER.
The respective obligations of each party  to effect the Merger shall be subject
to the fulfillment at or prior to the Effective Time of the following
conditions:

                (a)  The Merger shall  have been approved  and adopted  by the
         requisite  vote of  the holders  of IFC Common  Stock and by  the
         requisite vote of the holders of NCC Common Stock.

                (b)  The  NCC Common Stock issuable in the Merger shall  have
         been authorized for  listing on the New York Stock Exchange, upon
         official notice of issuance.

                (c)  All  authorizations, consents, orders or approvals  of,
         and all expirations of waiting  periods imposed by, any Governmental
         Entity (collectively,  "Consents") which  are necessary for the 
         consummation of  the Merger, (other  than immaterial  Consents, the
         failure  to obtain which would not be materially adverse to the 
         combined businesses of NCC, IFC, NCC's subsidiaries and IFC
         Subsidiaries taken as  a whole) shall  have been obtained or shall 
         have occurred and shall be in  full force and effect at the Effective
         Time; PROVIDED, HOWEVER, that no such authorization, consent,  order
         or approval shall be deemed to have been received if it  shall include
         any conditions or requirements which would so adversely impact the
         economic or business benefits of the transactions contemplated by





                                       36
<PAGE>   66
         this Agreement so as to render inadvisable in the reasonable opinion
         of the Board of Directors of NCC the consummation of the Merger.  

                (d)  The Registration Statement shall have become effective in
         accordance with the provisions of  the Securities Act.  No stop order
         suspending the effectiveness of the Registration Statement shall have  
         been issued by the Commission and remain in effect.  

                (e)  NCC and  IFC shall  have received  a letter,  dated  the
         date  of the  Closing, from  Ernst  and Young,  NCC's independent
         accountants, to the  effect that, for  financial reporting purposes,
         the Merger qualifies for  pooling-of-interests accounting treatment 
         under generally accepted accounting principles if consummated in
         accordance with this Agreement.

                (f)  No  temporary restraining order, preliminary  or permanent
         injunction or  other order by any  federal or state court  in the
         United States which prevents the consummation of the Merger shall have
         been issued and remain in effect.

                (g) Buchanan Ingersoll Professional Corporation, counsel to
         IFC, shall have delivered  to IFC and NCC their  opinion, dated the
         day of the Effective  Time, substantially to the effect that,  on the
         basis of facts, representations and  assumptions set forth in such
         opinion which are consistent with the state of facts existing  at the
         Effective Time, the  Merger will be treated for federal  income tax
         purposes as a reorganization within the meaning of Section  368(a) of
         the Code and that, accordingly:  (i) no gain or loss will be
         recognized by NCC or IFC as a result of  the Merger; (ii) no gain or 
         loss will be recognized by the shareholders of  IFC who exchange their
         shares of the IFC Common Stock solely for shares  of NCC Common Stock
         pursuant to  the Merger (except with respect  to cash received in lieu
         of  a fractional share interest in NCC Common  Stock); (iii) the tax 
         basis of the shares  of NCC Common  Stock received by shareholders 
         who exchange all  of their shares of IFC Common Stock solely for
         shares of NCC.

        Common Stock in the Merger will be the same as the tax basis of the
shares of IFC Common Stock surrendered in exchange therefor (reduced by any
amount allocable to  a fractional share interest  for which cash is  received);
and (iv)  the holding period of  the shares of  NCC Common Stock received in
the Merger will include the period during which the shares of IFC Common Stock
surrendered in exchange therefor were held, provided such shares of IFC Common
Stock were held as capital assets at the Effective





                                       37
<PAGE>   67
Time.  In rendering  such opinion, counsel may  require and rely upon
representations contained in  certificates of officers of  IFC, NCC, and
others.

         7.2  CONDITIONS TO OBLIGATION OF IFC TO EFFECT THE MERGER.  The
obligation of IFC to effect the  Merger shall be  subject to  the fulfillment
or waiver at or prior to the Effective Time of the additional following
conditions:

                (a)  NCC shall have performed in all material respects its
         covenants contained in this Agreement required to  be performed at or
         prior to the Effective Time.

                (b)  The representations and warranties of NCC contained in
         this Agreement shall be true in all material respects  when made and
         the representations and warranties set forth in Article  3 shall be
         true in all material respects as of the  Effective Time as if made at
         and as of such time, except as expressly contemplated  or permitted by
         this Agreement and except for representations and warranties relating 
         to a time or times other than the Effective Time which were or will be
         true in all material respects at such time or times.

                (c)  NCC shall have furnished  IFC a Certificate dated the date
         of the  Closing, signed by the Chief Executive Officer and  Chief
         Financial Officer of NCC that,  to the best of their knowledge and
         belief after due inquiry, the conditions  set forth in Subsections
         7.2(a) and 7.2(b) have been satisfied.

                (d)   IFC and its  directors and officers who  sign the
         Registration  Statement shall have received  from Ernst  and Young,
         NCC's independent certified public accountants,  "comfort" letters,
         dated (i) the date of the mailing of the Proxy Statement to NCC's
         shareholders and (ii) shortly prior  to the Effective Date, with
         respect to  certain financial information regarding NCC  in the form
         customarily issued  by such accountants at such time in
         transactions of this type.

         7.3   CONDITIONS  TO OBLIGATION OF  NCC TO  EFFECT THE MERGER.   The
obligation of NCC  to effect  the Merger  shall be subject  to the fulfillment
or waiver at or prior to the Effective Time of the additional following
conditions:

                (a)  IFC shall have performed  in all material respects its
         covenants contained in this Agreement required to  be performed at or
         prior to the Effective Time.

                (b)  The representations and warranties  of IFC contained in
         this Agreement shall be true in all material  respects when made and
         the representations and warranties set forth in Article 4 shall be
         true in all material respects as of the Effective Time as if made
         on and





                                       38
<PAGE>   68
         as of  such time, except as  expressly contemplated or permitted by
         this Agreement  and except for representations and  warranties
         relating to a time or times other than the Effective Time which were
         or will be true in all material respects at such time or times.

                (c)   IFC shall have furnished NCC  a Certificate dated the
         date of the Closing signed by  the Chief Executive Officer and Chief
         Financial Officer of IFC that,  to the best of their knowledge and
         belief after due inquiry, the conditions set forth in subsections
         7.3(a) and 7.3(c) have been satisfied.

                (d)   NCC and its  directors and officers who  sign the
         Registration  Statement shall have received  from Coopers  & Lybrand
         LLP, IFC's independent  certified public  accountants,  "comfort"
         letters,  dated (i)  the date of  the  mailing of  the Proxy 
         Statement  to IFC's shareholders  and (ii) shortly prior to the
         Effective Date,  with respect to certain financial information
         regarding IFC in the form customarily issued by such accountants at    
         such time in transactions of this type.

                              VIII.  MISCELLANEOUS
                                     -------------
         8.1  TERMINATION.  This  Agreement may be terminated at any  time
prior to the Effective  Time, whether before or after approval  by the
shareholders of IFC and/or the stockholders of NCC:

                (a)  by mutual consent of the Board of Directors of NCC and the
         Board of Directors of IFC;

                (b)  by either NCC or IFC if the Merger shall not have been
         consummated  on or before August 27, 1996  or if this Agreement was
         not approved  at either the IFC Meeting or the NCC Meeting 
         (provided the terminating party  is not otherwise in material breach 
         of its obligations under this Agreement);

                (c)  by IFC if  any of the conditions specified in Sections 7.1
         and 7.2  have not been met or waived by IFC at such  time as such 
         condition can no longer be satisfied;

                (d)  by NCC if any of the conditions  specified in Sections 7.1
         and 7.3 have not been met  or waived by NCC at such time  as such 
         condition can no longer be satisfied;

         8.2  NON-SURVIVAL  OF REPRESENTATIONS, WARRANTIES  AND AGREEMENTS.
The  representations and warranties  or covenants in  this Agreement will
terminate  at the  Effective Time or the  earlier termination  of this
Agreement  pursuant to Section  7.1, as  the case may  be; PROVIDED, HOWEVER,





                                       39
<PAGE>   69
that if the Merger  is consummated, Sections 1.6,  2.1 through 2.4, 5.4, 5.5,
5.8, 5.17 and 8.2 hereof will  survive the Effective Time  to the extent
contemplated by such  Sections; PROVIDED, FURTHER, that  the last sentence  of
Section 5.5  and all of  Section 8.10 hereof  will in all events survive any
termination of this Agreement.

         8.3  WAIVER AND AMENDMENT.  Subject to applicable provisions of the
DGCL and BCL, any provision of this Agreement may be waived  at any time by the
party  which is, or whose stockholders are, entitled  to the benefits thereof,
and this Agreement may be  amended or supplemented at any time,  provided that
no amendment will be made after any stockholder approval of the Merger which
reduces or changes  the form of the Merger Consideration  without further
stockholder approval.  No such waiver,  amendment or supplement will be
effective unless in a writing which makes express reference to this Section 8.3
and is signed by the party or parties sought to be bound thereby.

         8.4  ENTIRE AGREEMENT.   This Agreement together with the Option
Agreement  contain the entire agreement among NCC  and IFC with respect to the
Merger and the other transactions contemplated hereby and thereby, and
supersedes all prior agreements among the parties with respect to such matters.

         8.5  APPLICABLE  LAW; CONSENT TO  JURISDICTION.  This Agreement  will
be governed by  and construed in accordance  with the laws  of the State  of
Ohio except to the extent  laws of the state of Delaware and  Commonwealth of
Pennsylvania govern the merger.   NCC and IFC consent to personal jurisdiction
in any  action brought in any federal or state  court within the State of  Ohio
having subject matter jurisdiction  in the matter for purposes of any action
arising out of this Agreement.

         8.6  CERTAIN DEFINITIONS; HEADLINES.  (a) For purposes of this
Agreement, the term:

                       (i)   "affiliate", "associate" and "significant
         subsidiary"  shall have the respective  meanings ascribed to such
         terms in Rule 12b-2 of the General Rules and Regulations under the
         Exchange Act,  as in effect on the date hereof.

                       (ii)   "control" (including the terms "controlled by"
         and "under common control with")  means the possession, directly or
         indirectly or as trustee or executor, of the power to direct or cause
         the  direction of the management or policies of a person, whether 
         through the ownership of stock, as trustee or executor, by
         contract or credit arrangement or otherwise;





                                       40
<PAGE>   70
                  (iii)  "Fed Approval Date" means the day the FRB issues 
          order approving consummation of the Merger.  

                  (iv)   "Market Price" means  the average of  the per share 
         closing  prices on the  New York Stock  Exchange of NCC Common Stock
         for the 20 consecutive trading days ending at the end of the third     
         trading day immediately preceding the Effective Time.


                  (v)    "Material Adverse  Effect" means  an event,
         change or  occurrence which  has a material negative impact on  the
         financial condition, businesses or results of operations of IFC and
         its subsidiaries, taken as a whole, or NCC and its subsidiaries, taken 
         as  a whole, as the case may be, or the ability of IFC or NCC,  as the
         case may be, to consummate the transactions contemplated hereby.  The
         effect of any action taken by IFC solely  pursuant to Subsection
         5.2(f) shall not be taken into consideration in determining  whether
         any Material Adverse Effect has occurred.

                  (vi)  "person" means an individual, corporation, partnership, 
         association, trust or unincorporated organization; and 

                  (vii)  "subsidiary" of IFC, NCC or any other  person means,
         except where the context otherwise requires, any corporation,
         partnership, trust or similar  association of which IFC, NCC or any 
         other person, as the case may be  (either alone or through or together
         with any other subsidiary), owns, directly or indirectly, more  than
         50% of the stock or other equity interests, the holders of which  are
         generally entitled to vote for the election of the board of directors
         or other governing body of such corporation.

                (b) The descriptive headings contained in this  Agreement are
         for convenience and reference only and  will not affect in any  way
         the meaning or interpretation of this Agreement.

                (c)  Unless the  context of this Agreement expressly  indicates
         otherwise, (i) any singular  term in this Agreement will  include the
         plural and  any plural term will include the singular and  (ii) the
         term section or schedule  will mean a section or schedule  of
         or to this Agreement.

         8.7   NOTICES.  All  notices, consents, requests, demands  and other
communications hereunder will  be in writing and  will be deemed to have been
duly given or  delivered if delivered personally,  telexed with receipt
acknowledged, mailed by registered  or certified mail  return receipt
requested, sent by facsimile with confirmation of receipt, or delivered by a
recognized commercial courier addressed as follows:





                                       41
<PAGE>   71
         If to IFC to:

                Integra Financial Corporation
                Four PPG Place
                Pittsburgh, Pennsylvania 15222-5408
                Fax No. (412) 261-7279
                Attention:  Chairman of the Board

         With copies to:

                Integra Financial Corporation
                Four PPG Place
                Pittsburgh, Pennsylvania 15222-5408
                Fax No. (412) 261-7279
                Attention:  General Counsel

         With copies to:

                Buchanan Ingersoll P.C.
                1 Oxford Center
                301 Grant Street, 20th Floor
                Pittsburgh, Pennsylvania 15219-1410
                Fax No. (412) 562-1041
                Attention: William R. Newlin

         If to NCC to:

                National City Corporation
                P. O. Box 5756
                Cleveland, Ohio   44101-0756
                Attention:  Chairman of the Board
                Fax No. (216) 575-3332

         With a copy to:

                National City Corporation
                Law Department
                P. O. Box 5756
                Cleveland, Ohio   44101-0756
                Attention:  General Counsel
                Fax No. (216) 575-3332





                                       42
<PAGE>   72
or to such other address as any party may have furnished to the other parties
in writing in accordance with this Section 8.7.

         8.8  COUNTERPARTS.   This Agreement may be executed in  any number of
counterparts, each of  which will be deemed to be  an original but all of which
together will constitute but one agreement.

         8.9  PARTIES IN INTEREST;  ASSIGNMENT.  Except for Section 2.2, (which
is  intended to be for the benefit of the  holders of Outstanding Options under
the IFC  Option Plans  to the  extent contemplated thereby  and their
beneficiaries,  and may  be enforced  by such  persons) and Sections 5.4 and
5.8 hereof (which  are intended to be for  the benefit of directors, officers
or employees to the  extent contemplated thereby and their beneficiaries, and
may be enforced  by such persons),  this Agreement is  not intended to nor
will it confer  upon any other  person (other than the parties hereto) any
rights or remedies.  Without the prior  written consent of the other parties to
this Agreement  neither NCC nor  IFC shall assign any rights  or delegate any
obligations under  this Agreement.  Any such  purported  assignment or
delegation made without prior consent of the other parties hereto shall be null
and void.

         8.10 EXPENSES.

                (a)   If the  Merger is consummated,  all costs  and expenses
         incurred  in connection  with this  Agreement and the  transactions    
         contemplated hereby will be paid by the Surviving Corporation.

                (b)   Notwithstanding anything contained in  Subsection 8.10(a)
         to the  contrary, if this Agreement  is terminated by IFC  or NCC
         pursuant to Subsection 8.1(c)  or 8.1(d),  respectively, because of 
         the willful breach  by the  other party  of any  representation,
         warranty, covenant,  undertaking or restriction contained in this
         Agreement and  if the terminating party is not in material breach of
         any representation, warranty, covenant, undertaking  or restriction
         contained in this  Agreement, then the breaching party  shall pay all
         costs and expenses of the terminating party; PROVIDED, HOWEVER, that 
         if this Agreement is terminated under  circumstances other than those 
         described in this Subsection 8.10(b), all costs and expenses incurred
         such costs and expenses. Nothing contained in this Subsection 8.10(b)
         shall constitute or shall be deemed to constitute liquidated damages
         for the willful breach by a  party of the terms of this Agreement or
         otherwise limit the rights of the nonbreaching party.





                                       43
<PAGE>   73
                (c)  Final settlement with respect to payment of fees and
         expenses by the parties to this Agreement pursuant to Subsection
         8.10(b)  shall be made within  thirty (30) days  of the termination
         of this Agreement.

         8.11  ENFORCEMENT OF THE AGREEMENT.   The parties hereto  agree that
irreparable damage  would occur  in the  event that any  of the provisions  of
this Agreement were not performed  in accordance with their specific terms or
were otherwise  breached.  It is accordingly agreed that the parties hereto
will be entitled  to an injunction or injunctions to prevent breaches of this
Agreement and  to enforce specifically the terms and provisions  hereof in any
court of the United  States or any state having jurisdiction, this being in
addition  to any other remedy to which they are entitled at law or in equity.

         8.12 SEVERABILITY.  If any term or other provision of this Agreement
is invalid, illegal or incapable of being enforced by any  rule of law or
public policy, all other  terms and  provisions of this  Agreement will
nevertheless remain in  full force  and effect so  long as  the economic  or
legal substance of the transactions contemplated  hereby is not affected in any
manner  adverse to any party hereto.  Upon any such determination  that any
term or other provision is  invalid, illegal or incapable of  being enforced,
the parties hereto  will negotiate in good faith to modify  this Agreement so
as to  effect the original intent of the  parties as closely as possible  in an
acceptable manner  to the end that the transactions contemplated by this
Agreement are consummated to the extent possible.

         IN WITNESS WHEREOF, the parties hereto have caused  their duly
authorized representatives to execute this Agreement as of the date first above
written.

                                INTEGRA FINANCIAL CORPORATION

Attest Leonard M. Carroll       By  /s/  William F. Roemer
       --------------------         ----------------------------
                                Its:  Chairman & CEO
                                    ----------------------------

                                NATIONAL CITY CORPORATION

Attest David L. Zoeller         By   /s/  David A. Daberko
       --------------------         ----------------------------
                                Its:   President & CEO
                                    ----------------------------




                                       44
<PAGE>   74

                                  EXHIBIT B

<PAGE>   75


                            STOCK OPTION AGREEMENT

                 STOCK OPTION AGREEMENT, dated as of August 27, 1995, between
National City Corporation, a Delaware corporation ("Issuer"), and Integra
Financial Corporation, a Pennsylvania corporation ("Grantee").

                             W I T N E S S E T H:
                             - - - - - - - - - -

                 WHEREAS, as a condition to, and contemporaneous with the
execution of this Stock Option Agreement the parties are entering into an
Agreement and Plan of Merger dated August 27, 1995 ("Agreement") and in
consideration therefor, Issuer has agreed to grant Grantee the Option (as
hereinafer defined):

                 NOW, THEREFORE, in consideration of the foregoing and the
mutual covenants and agreements set forth herein and in the Agreement, the
parties hereto agree as follows:

                 1.  (a)  Issuer hereby grants to Grantee an unconditional,
irrevocable option (the "Option") to purchase, subject to the terms hereof, up
to 12,098,600 fully paid and nonassessable shares of Common Stock, no par value
("Common Stock"), of Issuer at a price of $31.625 share; PROVIDED, HOWEVER,
that in the event Issuer issues or agrees to issue any shares of Common Stock
at a price less than $31.625 per share (as adjusted pursuant to subsection
5(b)), such price shall be equal to such lesser price (such price, as adjusted
if applicable, the "Option Price"); PROVIDED FURTHER that in no event shall the
number of shares for which this Option is exercisable exceed 8.2% of the
Issuer's issued and outstanding common shares without giving effect to any
shares subject or issued pursuant to the Option.  The number of shares of
Common Stock that may be received upon the exercise of the Option and the
Option Price are subject to adjustment as herein set forth.

                (b)  In the event that any additional shares of Common Stock    
are issued or otherwise become outstanding after the date of this Stock Option
Agreement, the number of shares of Common Stock subject to the Option shall be
increased so that, after such issuance, it equals 8.2% of the number of shares 
of Common Stock then issued and outstanding without giving effect to any shares
subject or issued pursuant to the Option.  Nothing contained in this Section
1(b) or elsewhere in this Stock Option Agreement shall be deemed to authorize
Issuer or Grantee to breach any provision of the Agreement.

                 2.  (a)  The Holder (as hereinafter defined) may exercise the
Option, in whole or part, if, but only if, both an Initial Triggering Event (as
hereinafter defined) and a Subsequent Triggering Event (as hereinafter defined)
shall have occurred prior to the occurrence of an Exercise Termination Event
(as hereinafter defined), PROVIDED that the Holder shall have sent the written
notice of such exercise (as provided in subsection (e) of this Section 2)
within 30 days following such Subsequent Triggering Event (or such later date
as provided in Section 10). Each of the following shall be an Exercise
Termination Event:  (i) immediately prior to the Effective 


<PAGE>   76

Time of the Merger; (ii) termination of the Agreement in accordance with the 
provisions thereof (other than a termination resulting from a willful breach by
Issuer of any provision of the Agreement) if such termination occurs prior to
the occurrence of an Initial Triggering Event; or (iii) the passage of twelve
months after termination of the Agreement if such termination follows the
occurrence of an Initial Triggering Event (PROVIDED that if an Initial
Triggering Event continues or another Initial Triggering Event occurs beyond
such termination, the Exercise Termination Event shall be twelve months from
the expiration of the Last Triggering Event but in no event more than 18 months
after such termination).  The "Last Triggering Event" shall mean the last
Initial Triggering Event to occur.  The term "Holder" shall mean the holder or  
holders of the Option.
        
                 (b)  The term "Initial Triggering Event" shall mean any of the
following events or transactions occurring after the date hereof:

                          (i)  Issuer or any of its subsidiaries (each an
       "Issuer Subsidiary"), without having received Grantee's prior written
       consent, shall have engaged in an Acquisition Transaction (as
       hereinafter defined) with any person (the term "person" for purposes of
       this Stock Option Agreement having the meaning assigned thereto in
       Sections 3(a)(9) and 13(d)(3) of the Securities Exchange Act of 1934
       (the "1934 Act"), and the rules and regulations thereunder) other than
       Grantee or any of its subsidiaries (each a "Grantee Subsidiary") other
       than as contemplated by the Agreement.  For purposes of this Stock
       Option Agreement, "Acquisition Transaction" shall mean (x) a merger or
       consolidation, or any similar transaction, involving Issuer or any of
       Issuer's banking subsidiaries, specifically excluding Madison Bank and
       Trust Company and National City Bank, Ashland, ("Significant
       Subsidiary"), (y) a purchase, lse or other acquisition of all or
       substantially all of the assets of Issuer or any Significant Subsidiary,
       or (z) a purchase or other acquisition (including by way of merger,
       consolidation, share exchange or otherwise) of securities representing
       30% or more of the voting power of Issuer; (The term Acquisition
       Transaction specifically does not include any merger or consolidation
       among Issuer and/or Issuer Subsidiaries.)
        
                          (ii)  Any person other than Grantee, any Grantee
       Subsidiary or any Issuer Subsidiary acting in a fiduciary capacity shall
       have acquired beneficial ownership of 30% or more of the outstanding
       shares of Common Stock (the term "beneficial ownership" for purposes of
       this Stock Option Agreement having the meaning assigned thereto in
       Section 13(d) of the 1934 Act, and the rules and regulations
       thereunder);
        
                 (c)  The term "Subsequent Triggering Event" shall mean either
of the following events or transactions occurring after the date hereof:

                 (i)  The acquisition  by any person of beneficial ownership of 
       40% or more of the then outstanding Common Stock; or




                                     -2-

<PAGE>   77
                 (ii)  The occurrence of the Initial Triggering Event described 
       in clause (i) of subsection 2(b), except that the percentage referred to
       in clause (z) shall be 40%.
        
                 (d)  Issuer shall notify Grantee promptly in writing of the
occurrence of any Initial Triggering Event or Subsequent Triggering Event
(together, a "Triggering Event"), it being understood that the giving of such
notice by Issuer shall not be a condition to the right of the Holder to
exercise the Option.

                 (e)  In the event the Holder is entitled to and wishes to
exercise the Option, it shall send to Issuer a written notice (the date of
which being herein referred to as the "Notice Date") specifying (i) the total
number of shares it will purchase pursuant to such exercise and (ii) a place
and date not earlier than three business days nor later than 60 business days
from the Notice Date for the closing of such purchase (the "Closing Date");
PROVIDED that if prior notification to or approval of the FRB or any other
Governmental Entity is required in connection with such purchase, the Holder
shall promptly file the required notice or application for approval and shall
expeditiously process the same and the period of time that otherwise would run
pursuant to this sentence shall run from the later of (x) the date on which any
required notification periods have expired or been terminated and (y) the date
on which such approvals have been obtained and any requisite waiting period or 
periods shall have passed.  Any exercise of the option shall be deemed to occur
on the Notice Date relating thereto.
        
                 (f)  At the closing referred to in subsection (e) of this
Section 2, the Holder shall pay to Issuer the aggregate purchase price for the
shares of Common Stock purchased pursuant to the exercise of the Option in
immediately available funds by wire transfer to a bank account designated by
Issuer, PROVIDED that failure or refusal of Issuer to designate such a bank
accnt shall not preclude the Holder from exercising the Option.

                 (g)  At such closing, simultaneously with the delivery of
immediately available funds as provided in subsection (f) of this Section 2,
Issuer shall deliver to the Holder a certificate or certificates representing
the number of shares of Common Stock purchased by the Holder and, if the Option
should be exercised in part only, a new Option evidencing the rights of the
Holder thereof to purchase the balance of the shares purchasable hereunder, and
the Holder shall deliver to Issuer a copy of this Stock Option Agreement and a
letter agreeing that the Holder will not offer to sell or otherwise dispose of
such shares in violation of applicable law or the provisions of this Stock
Option Agreement.

                 (h)  Certificates for Common Stock delivered at a closing
hereunder shall be endorsed with a restrictive legend that shall read
substantially as follows:

       "The transfer of the shares represented by this certificate is subject
       to certain provisions of an agreement between the registered holder
       hereof and Issuer and to resale restrictions arising under the
       Securities Act of 1933, as amended.  A copy of such agreement is on file
       at the principal office of Issuer and will be provided to the holder
       hereof without charge upon receipt by Issuer of a written request
       therefor."
        


                                     -3-


<PAGE>   78

It is understood and agreed that:  (i) the reference to the resale restrictions
of the Securities Act of 1933, as amended (the "1933 Act") in the above legend
shall be removed by delivery of substitute certificate(s) without such
reference if the Holder shall have delivered to Issuer a copy of a letter from
the staff of the Securities and Exchange Commission (the "SEC"), or an opinion
of counsel, in form and substance satisfactory to Issuer, to the effect that
such legend is not required for purposes of the 1933 Act; (ii) the reference to
the provisions of this Stock Option Agreement in the above legend shall be
removed by delivery of substitute certificate(s) without such reference if the
shares have been sold or transferred in compliance with the provisions of this
Stock Option Agreement and under circumstances that do not require the
retention of such reference; and (iii) the legend shall be removed in its
entirety if the conditions in the preceding clauses (i) and (ii) are both
satisfied.  In addition, such certificates shall bear any other legend as may
be required by law.
        
                 (i)  Upon the giving by the Holder to Issuer of the written
notice of exercise of the Option provided for under subsection (e) of this
Section 2 and the tender of the applicable purchase price in immediately
available funds, the Holder shall be deemed to be the holder of record of the
shares of Common Stock issuable upon such exercise, notwithstanding that the
stock transfer books of Issuer shall then be closed or that certificates
representing such shares of Common Stock shall not then be actually delivered
to the Holder.  Issuer shall pay all expenses, and any and all United States
Federal, state and local taxes and other charges that may be payable in
connection with the preparation, issue and delivery of stock certificates under
this Section 2 in the name of the Holder or its assignee, transferee or
designee.

                 3.  Issuer agrees:  (i) that it shall at all times maintain,
free from preemptiveights, sufficient authorized but unissued or treasury
shares of Common Stock so that the Option may be exercised without additional
authorization of Common Stock after giving effect to all other options,
warrants, convertible securities and other rights to purchase Common Stock;
(ii) that it will not, by charter amendment or through reorganization,
consolidation, merger, dissolution or sale of assets, or by any other voluntary
act, avoid or seek to avoid the observance or performance of any of the
covenants, stipulations or conditions to be observed or performed hereunder by
Issuer; (iii) promptly to take all action as may from time to time be required
(including (x) complying with all premerger notification, reporting and waiting
period requirements specified in 15 U.S.C. Section l8a and regulations
promulgated thereunder and (y) in the event, under the Bank Holding Company Act
of 1956, as amended, or the Change in Bank Control Act of 1978, as amended, or
any state banking law, prior approval of or notice to the FRB or to any other
Governmental Entity is necessary before the Option may be exercised,
cooperating fully with the Holder in preparing such applications or notices and
providing such information to each such Governmental Entity as they may
require) in order to permit the Holder to exercise the Option and Issuer duly
and effectively to issue shares of Common Stock pursuant hereto; and (iv)
promptly to take all action provided herein to protect the rights of the Holder
against dilution.



                                     -4-



<PAGE>   79

                 4.  This Stock Option Agreement (and the Option granted
hereby) are exchangeable, without expense, at the option of the Holder, upon
presentation and surrender of this Stock Option Agreement at the principal
office of Issuer, for other agreements providing for Options of different
denominations entitling the holder thereof to purchase, on the same terms and
subject to the same conditions as are set forth herein, in the aggregate the
same number of shares of Common Stock purchasable hereunder. The terms "Stock
Option Agreement" and "Option" as used herein include any Stock Option
Agreements and related options for which this Stock Option Agreement (and the
Option granted hereby) may be exchanged.  Upon receipt by Issuer of evidence
reasonably satisfactory to it of the loss, theft, destruction or mutilation of
this Stock Option Agreement, and (in the case of loss, theft or destruction) of
reasonably satisfactory indemnification, and upon surrender and cancellation of
this Stock Option Agreement, if mutilated, Issuer will execute and deliver a
new Stock Option Agreement of like tenor and date. Any such new Stock Option
Agreement executed and delivered shall constitute an additional contractual
obligation on the part of Issuer, whether or not the Stock Option Agreement so
lost, stolen, destroyed or mutilated shall at any time be enforceable by
anyone.
        
                 5.  In addition to the adjustment in the number of shares of
Common Stock that are purchasable upon exercise of the Option pursuant to
Section 1 of this Stock Option Agreement, the number of shares of Common Stock
purchasable upon the exercise of the Option shall be subject to adjustment from
time to time as provided in this Section 5.

                          (a)  In the event of any change in Common Stock by
reason of stock dividends, split-ups, mergers, recapitalizations, combinations,
subdivisions, conversions, exchanges of shares or the like, the type and number
of shares of Common Stock purchasable upon exercise here shall be
appropriately adjusted.

                          (b)  Whenever the number of shares of Common Stock
purchasable upon exercise hereof is adjusted as provided in this Section 5, the
Option Price shall be adjusted by multiplying the Option Price by a fraction,
the numerator of which shall be equal to the number of shares of Common Stock
purchasable prior to the adjustment and the denominator of which shall be equal
to the number of shares of Common Stock purchasable after the adjustment.

                 6.  Upon the occurrence of a Subsequent Triggering Event that
occurs prior to an Exercise Termination Event, Issuer shall, at the request of
Grantee delivered within 30 days (or such later date as may be provided
pursuant to Section 10) of such Subsequent Triggering Event (whether on its own
behalf or on behalf of any subsequent holder of this Option (or part thereof)
or any of the shares of Common Stock issued pursuant hereto), promptly prepare,
file and keep current a shelf registration statement under the 1933 Act
covering any shares issued and issuable pursuant to this Option and shall use
its best efforts to cause such registration statement to become effective and
remain current in order to permit the sale or other disposition of any shares
of Common Stock issued upon total or partial exercise of this option ("Option
Shares") in accordance with any plan of disposition requested by Grantee;
PROVIDED, HOWEVER, that Issuer may postpone filing a registration statement
relating to a registration request by Grantee under this Section 6 for a period
of time (not in excess of 180 days) if in its judgment such filing would




                                     -5-



<PAGE>   80

require the disclosure of material information that Issuer has a BONA FIDE
business purpose for preserving as confidential.  Issuer will use its best
efforts to cause such registration statement first to become effective and then
to remain effective for such period not in excess of 180 days from the day such
registration statement first becomes effective or such shorter time as may be
reasonably necessary to effect such sales or other dispositions.  Grantee shall
have the right to demand two such registrations. If requested by any such
Holder in connection with such registration, Issuer shall become a party to any
underwriting agreement relating to the sale of such shares, but only to the
extent of obligating itself in respect of representations, warranties,
indemnities and other agreements customarily included in such underwriting
agreements.  The foregoing notwithstanding, if, at the time of any request by
Grantee for registration of Option Shares as provided above, Issuer is in the
process of registration with respect to an underwritten public offering of
shares of Common Stock, and if in the good faith judgment of the managing
underwriter or managing underwriters, or, if none, the sole underwriter or
underwriters, of such offering the offering or inclusion of the Holder's Option
or Option Shares would interfere with the successful marketing of the shares of
Common Stock offered by Issuer, the number of Option Shares otherwise to be
covered in the registration statement contemplated hereby may be reduced;
PROVIDED, HOWEVER, that after any such required reduction the number of Option
Shares to be included in such offering for the account of the Holder shall
constitute at least 25% of the total number of shares to be issued by the
Holder and Issuer in the aggregate; PROVIDED FURTHER, however, that if such
reduction occurs, then the Issuer shall file a registration statement for the
balance as promptly as practical and no reduction shall thereafter occur.  Each
such Holder shall provide all information reasonay requested by Issuer for
inclusion in any registration statement to be filed hereunder.  Upon receiving
any request under this Section 6 from any Holder, Issuer agrees to send a copy
thereof to any other person known to Issuer to be entitled to registration
rights under this Section 6, in each case by promptly mailing the same, postage
prepaid, to the address of record of the persons entitled to receive such       
copies.

                 7. (a)  Upon the occurrence of a Subsequent Triggering Event
that occurs prior to an Exercise Termination Event, (i) at the request of the
Holder, delivered within 30 days of the Subsequent Trigger Event (or such later
period as may be provided pursuant to Section 10), Issuer shall repurchase the
Option from the Holder at a price (the "Option Repurchase Price") equal to (x)
the amount by which (A) the market/offer price (as defined below) exceeds (B)
the Option Price, multiplied by the number of shares for which this Option may
then be exercised plus (y) Grantee's Out-of-Pocket Expenses (as defined below)
(to the extent not previously reimbursed) and (ii) at the request of the owner
of Option Shares from time to time (the "Owner"), delivered within 30 days of a
Subsequent Trigger Event (or such later period as may be provided pursuant to
Section 10), Issuer shall repurchase such number of the Option Shares from the
Owner as the Owner shall designate at a price (the "Option Share Repurchase
Price") equal to (x) the market/ offer price multiplied by the number of Option
Shares so designated plus (y) Grantee's Out-of-Pocket Expenses (to the extent
not previously reimbursed).  The term "Out-of-Pocket Expenses" shall mean
Grantee's reasonable out-of-pocket expenses incurred in connection with the
transactions contemplated by the Agreement, including, without limitation,
legal, accounting and investment banking fees. The term "market/offer price"
shall mean the highest of (i) the price per share of Common Stock at which a
tender offer or exchange offer 






                                     -6-


<PAGE>   81

therefor has been made after the date hereof, (ii) the price per share of
Common Stock to be paid by any third party pursuant to an agreement with
Issuer, (iii) the highest closing price for shares of Common Stock within the
30-day period immediately preceding the date the Holder gives notice of the
required repurchase of this Option or the Owner gives notice of the required
repurchase of Option Shares, as the case may be, or (iv) in the event of a sale
of all or substantially all of Issuer's assets, the sum of the price paid in
such sale for such assets and the current market value of the remaining assets
of Issuer as determined by a nationally recognized investment banking firm
selected by the Holder or the Owner, as the case may be, divided by the number
of shares of Common Stock of Issuer outstanding at the time of such sale.  In
determining the market/offer price, the value of consideration other than cash
shall be determined by a nationally recognized investment banking firm selected
by the Holder or Owner, as the case may be, whose determination shall be
conclusive and binding on all parties.
        
                 (b)  The Holder or the Owner, as the case may be, may exercise
its right to require Issuer to repurchase the Option and any Option Shares
pursuant to this Section 7 by surrendering for such purpose to Issuer, at its
principal office, a copy of this Stock Option Agreement or certificates for
Option Shares, as applicable, accompanied by a written notice or notices
stating that the Holder or the Owner, as the case may be, elects to require
Issuer to repurchase this Option and/or the Option Shares in accordance with
the provisions of this Section 7.  As promptly as practicable, and in any event
within five business days after the surrender of the Option and/or certificates
representing Option Shares and the receipt of such notice or notices relating
thereto, Issuer shall deliver or cause to be delivered to the Holder the Option
Repurchase Price and/or to the Owner the Option Share Repurchase Pce therefor
or the portion thereof that Issuer is not then prohibited under applicable law
and regulation from so delivering.
        
                 (c)  To the extent that Issuer is prohibited under applicable
law or regulation, or as a consequence of administrative policy, from
repurchasing the Option and/or the Option Shares in full, Issuer shall
immediately so notify the Holder and/or the Owner and thereafter deliver or
cause to be delivered, from time to time, to the Holder and/or the Owner, as
appropriate, the portion of the Option Repurchase Price and the Option Share
Repurchase Price, respectively, that it is no longer prohibited from
delivering, within five business days after the date on which Issuer is no
longer so prohibited; PROVIDED, HOWEVER, that if Issuer at any time after
delivery of a notice of repurchase pursuant to subsection (b) of this Section 7
is prohibited under applicable law or regulation, or as a consequence of
administrative policy, from delivering to the Holder and/or the Owner, as
appropriate, the Option Repurchase Price and the Option Share Repurchase Price,
respectively, in full (and Issuer hereby undertakes to use its best efforts to
obtain all required regulatory and legal approvals and to file any required
notices as promptly as practicable in order to accomplish such repurchase), the
Holder or Owner may revoke its notice of repurchase of the Option or the Option
Shares either in whole or to the extent of the prohibition, whereupon, in the
latter case, Issuer  shall promptly (i) deliver to the Holder and/or the Owner,
as appropriate, that portion of the Option Purchase Price or the Option Share
Repurchase Price that Issuer is not prohibited from delivering; and (ii)
deliver, as appropriate, either (A) to the Holder, a new Stock Option Agreement
evidencing the right of the Holder to purchase that number of shares of Common
Stock obtained by multiplying the number of shares of Common Stock for which 
the 



                                     -7-



<PAGE>   82

surrendered Stock Option Agreement was exercisable at the time of delivery of
the notice of repurchase by a fraction, the numerator of which is the Option
Repurchase Price less the sum of (x) the portion thereof theretofore delivered
to the Holder and (y) Out-of-Pocket Expenses and the denominator of which is
the Option Repurchase Price less Out-of-Pocket Expenses, or (B) to the Owner, a
certificate for the Option Shares it is then so prohibited from repurchasing,
assuming that the portion of the Option Share Repurchase Price theretofore
delivered is first applied to the payment of Out-of-Pocket Expenses and then to
the repurchase of Option Shares.
        
                 8.  (a)  In the event that prior to an Exercise Termination
Event, Issuer shall enter into an agreement (i) to consolidate or merge with
any person, other than Grantee or one of its subsidiaries, and shall not be the
continuing or surviving corporation of such consolidation or merger, (ii) to
permit any person, other than Grantee or one of its subsidiaries, to merge into
Issuer and Issuer shall be the continuing or surviving corporation, but, in
connection with such merger, the then outstanding shares of Common Stock shall
be changed into or exchanged for stock or other securities of any other person
or cash or any other property or the then outstanding shares of Common Stock
shall after such merger represent less than 50% of the outstanding shares and
share equivalents of the merged company, or (iii) to sell or otherwise transfer
all or substantially all of its assets to any person, other than Grantee or one
of its subsidiaries, then, and in each such case, the agreement governing such
transaction shall make proper provision so that the Option shall, upon the
consummation of any such transaction and upon the terms and conditions set
forth herein, be converted into, or exchanged for, an option (the "Substitute
Option"), at the election of the Holder, of either (x) the Acquiring
Corporation (as hereinafter defined) or (y) any person that conols the
Acquiring Corporation.
        
                 (b)  The following terms have the meanings indicated:

                          (1) "Acquiring Corporation" shall mean (i) the
       continuing or surviving corporation of a consolidation or merger with
       Issuer (if other than Issuer), (ii) Issuer in a merger in which Issuer
       is the continuing or surviving person, and (iii) the transferee of all
       or substantially all of Issuer's assets.
        
                          (2) "Substitute Common Stock" shall mean the common
       stock to be issued by the issuer of the Substitute Option upon exercise
       of the Substitute Option.
        
                          (3) "Assigned Value" shall mean the market/offer 
       price, as defined in Section 7.

                          (4) "Average Price" shall mean the average closing
       price of a share of the Substitute Common Stock for the one year
       immediately preceding the consolidation, merger or sale in question, but
       in no event higher than the closing price of the shares of Substitute
       Common Stock on the day preceding such consolidation, merger or sale;
       PROVIDED, that if Issuer is the issuer of the Substitute Option, the
       Average Price shall be computed with respect to a share of common stock
       issued by the person merging into 




                                     -8-



<PAGE>   83

       Issuer or by any company which controls or is controlled by such person,
       as the Holder may elect.
        
                 (c)  The Substitute Option shall have the same terms as the
Option, provided, that if the terms of the Substitute Option cannot, for legal
reasons, be the same as the Option, such terms shall be as similar as possible
and in no event less advantageous to the Holder.  The issuer of the Substitute
Option shall also enter into an agreement with the then Holder or Holders of
the Substitute Option in substantially the same form as this Stock Option
Agreement, which shall be applicable to the Substitute Option.

                 (d)  The Substitute Option shall be exercisable for such
number of shares of Substitute Common Stock as is equal to the Assigned Value
multiplied by the number of shares of Common Stock for which the Option is then
exercisable, divided by the Average Price.  The exercise price of the
Substitute Option per share of Substitute Common Stock shall then be equal to
the Option Price multiplied by a fraction, the numerator of which shall be the
number of shares of Common Stock for which the Option is then exercisable and
the denominator of which shall be the number of shares of Substitute Common
Stock for which the Substitute Option is exercisable.

                 (e)  In no event, pursuant to any of the foregoing paragraphs,
shall the Substitute Option be exercisable for more than 8.2% of the shares of
Substitute Common Stock outstanding prior to exercise of the Substitute Option.
In the event that the Substitute Option would be exercisable for more than 8.2%
of the shares of Substitute Common Stock outstanding prior to exercise but for
this clause (e), the issuer of the Substitute Option (the "Substitute Option
Issuer") shall make a cash payment to the Holder equal to the excess of (i) the
value of the Substitute Option without giving effect to the limitation in this
clause (e) over (ii) the value of the Substitute Option after giving effect to
the limitationn this clause (e).  This difference in value shall be
determined by a nationally recognized investment banking firm selected by the
Holder.

                 (f)  Issuer shall not enter into any transaction described in
subsection (a) of this Section 8 unless the Acquiring Corporation and any
person that controls the Acquiring Corporation assume in writing all the
obligations of Issuer hereunder.

                 9.  (a)  At the request of the holder of the Substitute Option
(the "Substitute Option Holder"), the issuer of the Substitute Option (the
"Substitute Option Issuer") shall repurchase the Substitute Option from the
Substitute Option Holder at a price (the "Substitute Option Repurchase Price")
equal to (x) the amount by which (i) the Highest Closing Price (as hereinafter
defined) exceeds (ii) the exercise price of the Substitute Option, multiplied
by the number of shares of Substitute Common Stock for which the Substitute
Option may then be exercised plus (y) Grantee's Out-of-Pocket 




                                     -9-




<PAGE>   84

Expenses (to the extent not previously reimbursed), and at the request of the
owner (the "Substitute Share Owner") of shares of Substitute Common Stock (the
"Substitute Shares"), the Substitute Option issuer shall repurchase the
Substitute Shares at a price (the "Substitute Share Repurchase Price") equal to
(x) the Highest Closing Price multiplied by the number of Substitute Shares so
designated plus (y) Grantee's Out-of-Pocket Expenses (to the extent not
previously reimbursed).  The term "Highest Closing Price" shall mean the
highest closing price for shares of Substitute Common Stock within the 30-day
period immediately preceding the date the Substitute Option Holder gives notice
of the required repurchase of the Substitute Option or the Substitute Share
Owner gives notice of the required repurchase of the Substitute Shares, as
applicable.
        
                 (b)  The Substitute Option Holder or the Substitute Share
Owner, as the case may be, may exercise its respective right to require the
Substitute Option Issuer to repurchase the Substitute Option and the Substitute
Shares pursuant to this Section 9 by surrendering for such purpose to the
Substitute Option Issuer, at its principal office, the agreement for such
Substitute Option (or, in the absence of such an agreement, a copy of this
Stock Option Agreement) and certificates for Substitute Shares accompanied by a
written notice or notices stating that the Substitute Option Holder or the
Substitute Share Owner, as the case may be, elects to require the Substitute
Option Issuer to repurchase the Substitute Option and/or the Substitute Shares
in accordance with the provisions of this Section 9.  As promptly as
practicable, and in any event within five business days after the surrender of
the Substitute Option and/or certificates representing Substitute Shares and
the receipt of such notice or notices relating thereto, the Substitute Option
Issuer shall deliver or cause to be delivered to the Substitute Option Holder
the Substitute Option Repurchase Pri and/or to the Substitute Share Owner the
Substitute Share Repurchase Price therefor or the portion thereof which the
Substitute Option Issuer is not then prohibited under applicable law and
regulation from so delivering.

                 (c)  To the extent that the Substitute Option Issuer is
prohibited under applicable law or regulation, or as a consequence of
administrative policy, from repurchasing the Substitute Option and/or the
Substitute Shares in part or in full, the Substitute Option Issuer shall
immediately so notify the Substitute Option Holder and/or the Substitute Share
Owner and thereafter deliver or cause to be delivered, from time to time, to
the Substitute Option Holder and/or the Substitute Share Owner, as appropriate,
the portion of the Substitute Share Repurchase Price, respectively, which it is
no longer prohibited from delivering, within five business days after the date
on which the Substitute Option Issuer is no longer so prohibited; PROVIDED,
HOWEVER, that if the Substitute Option Issuer is at any time after delivery of
a notice of repurchase pursuant to subsection (b) of this Section 9 prohibited
under applicable law or regulation, or as a consequence of administrative
policy, from delivering to the Substitute Option Holder and/or the Substitute
Share Owner, as appropriate, the Substitute Option Repurchase Price and the
Substitute Share Repurchase Price, respectively, in full (and the Substitute
Option Issuer shall use its best efforts to receive all required regulatory and
legal approvals as promptly as practicable in order to accomplish such
repurchase), the Substitute Option Holder or Substitute Share Owner may revoke
its notice of repurchase of the Substitute Option or the Substitute Shares
either in whole or to the extent of the prohibition, whereupon, in the latter
case, the Substitute Option Issuer shall promptly (i) deliver to the Substitute
Option Holder or Substitute Share Owner, as appropriate, that portion of the
Substitute Option Repurchase Price or the Substitute Share Repurchase Price
that the Substitute Option Issuer is not prohibited from delivering; and (ii)
deliver, as appropriate, either (A) to the Substitute Option Holder, a new
Substitute Option evidencing the right of the Substitute Option Holder to
purchase that number 




                                     -10-




<PAGE>   85

of shares of the Substitute Common Stock obtained by multiplying the number of
shares of the Substitute Common Stock for which the surrendered Substitute
Option was exercisable at the time of delivery of the notice of repurchase by a
fraction, the numerator of which is the Substitute Option Repurchase Price less
the sum of (x) the portion thereof theretofore delivered to the Substitute
Option Holder and (y) Out-of-Pocket Expenses and the denominator of which is
the Substitute Option Repurchase Price less Out-of-Pocket Expenses, or (B) to
the Substitute Share Owner, a certificate for the Substitute Option Shares it
is then so prohibited from repurchasing, assuming that the portion of the
Substitute Share Repurchase Price theretofore delivered is first applied to the
payment of Out-of-Pocket Expenses and then to the repurchase of Substitute
Shares.
        
                 10.  The 30-day period for exercise of certain rights under
Sections 2, 6, 7 and 12 shall be extended:  (i) to the extent necessary to
obtain all regulatory approvals for the exercise of such rights, and for the
expiration of all statutory waiting periods; and (ii) to the extent necessary
to avoid liability under Section 16(b) of the 1934 Act by reason of such
exercise.

                 11.  Issuer hereby represents and warrants to Grantee as
                      follows:

                 (a)  Issuer has full corporate power and authority to execute
and deliver this Stock Option Agreement and to consummate the transactions
contemplated hereby.  The execution and delivery of this Stock Option Agreement
and the consummation of the transactions contemplated hereby have been duly and
validly authorized by the Board of Directors of Issuer and no other corporate
proceedings on the part of Issuer are necessary to authorize this Stock Option
Agreement or to consummate the transactions so contemplated.  This Stock Option
Agreement has been duly and validly executed and delivered by Issuer.  This
Stock Option Agreement is the valid and legally bindi obligation of Issuer.
        
                 (b)  Issuer has taken all necessary corporate action to
authorize and reserve and to permit it to issue, and at all times from the date
hereof through the termination of this Stock Option Agreement in accordance
with its terms will have reserved for issuance upon the exercise of the Option,
that number of shares of Common Stock equal to the maximum number of shares of
Common Stock at any time and from time to time issuable hereunder, and all such
shares, upon issuance pursuant hereto, will be duly authorized, validly issued,
fully paid, nonassessable, and will be delivered free and clear of all claims,
liens, encumbrances and security interests and not subject to any preemptive
rights.

                 12.  Neither of the parties hereto may assign any of its
rights and obligations under this Stock Option Agreement or the Option created
hereunder to any other person, without the express written consent of the other
party, except that in the event a Subsequent Triggering Event shall have
occurred prior to an Exercise Termination Event, Grantee, subject to the
express provisions hereof, may assign in whole or in part its rights and
obligations hereunder within 30 days following such Subsequent Triggering Event
(or such later period as may be provided pursuant to Section 10); PROVIDED,
HOWEVER, that until the date 30 days following the date at which the FRB
approves an application by Grantee under the Bank Holding Company Act to





                                     -11-


<PAGE>   86

acquire the shares of Common Stock subject to the Option, Grantee may not
assign its rights under the Option except in (i) a widely dispersed public
distribution, (ii) a private placement in which no one party acquires the right
to purchase in excess of 2% of the voting shares of Issuer, (iii) an assignment
to a single party (E.Q., a broker or investment banker) for the purpose of
conducting a widely dispersed public distribution on Grantee's behalf, or (iv)
any other manner approved by the FRB.

                 13.  Each of Grantee and Issuer will use its best efforts to
make all filings with, and to obtain consents of, all third parties and
Governmental Entities necessary to the consummation of the transactions
contemplated by this Stock Option Agreement, including without limitation
making application to list the shares of Common Stock issuable hereunder on the
New York Stock Exchange upon official notice of issuance and applying to the
FRB under the Bank Holding Company Act for approval to acquire the shares
issuable hereunder.

                 14.  Notwithstanding anything to the contrary herein, in the
event that the Holder or Owner or any affiliate (as defined in Rule 12b-2 of
the rules and regulations under the 1934 Act) thereof is a person making an
offer or proposal to engage in an Acquisition Transaction (other than the
Merger), then (i) in the case of a Holder or any affiliate thereof, the Option
held by it shall immediately terminate and be of no further force or effect,
and (ii) in the case of an Owner or any affiliate thereof, the Option Shares
held by it shall be immediately repurchasable by Issuer at the Option Price.

                 15.  The parties hereto acknowledge that damages would be an
inadequate remedy for a breach of this Stock Option Agreement by either party
hereto and that the obligations of the parties shall hereto be enforceable by
either party hereto through injunctive or other equitable relief.

                 16.  If any term, provision, covenant or restriction contained
in this Stock Option Agreement is held by a court or a federal or state 
regulatory agency of competent jurisdiction to be invalid, void or
unenforceable, the remainder of the terms, provisions and covenants and
restrictions contained in this Stock Option Agreement shall remain in full
force and effect, and shall in no way be affected, impaired or invalidated.  If
for any reason such court or regulatory agency determines that the Holder is
not permitted to acquire, or Issuer is not permitted to repurchase pursuant to
Section 7, the full number of shares of Common Stock provided in Section 1(a)
hereof (as adjusted pursuant to Section 1(b) or 5 hereof), it is the express
intention of Issuer to allow the Holder to acquire or to require Issuer to
repurchase such lesser number of shares as may be permissible, without any
amendment or modification hereof.

                 17.  All notices, requests, claims, demands and other
communications hereunder shall be deemed to have been duly given when delivered
in person, by cable, telegram, telecopy or telex, or by registered or certified
mail (postage prepaid, return receipt requested) at the respective addresses of
the parties set forth in the Agreement.





                                     -12-



<PAGE>   87

                 18.  This Stock Option Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware, regardless of
the laws that might otherwise govern under applicable principles of conflicts
of laws thereof.

                 19.  This Stock Option Agreement may be executed in two or
more counterparts, each of which shall be deemed to be an original, but all of
which shall constitute one and the same agreement.

                 20.  Except as otherwise expressly provided herein, each of
the parties hereto shall bear and pay all costs and expenses incurred by it or
on its behalf in connection with the transactions contemplated hereunder,
including fees and expenses of its own financial consultants, investment
bankers, accountants and counsel.
        
                 21.  Except as otherwise expressly provided herein or in the
Agreement, this Stock Option Agreement contains the entire agreement between
the parties with respect to the transactions contemplated hereunder and
supersedes all prior arrangements or understandings with respect thereof,
written or oral.  The terms and conditions of this Stock Option Agreement shall
inure to the benefit of and be binding upon the parties hereto and their
respective successors and permitted assigns.  Nothing in this Stock Option
Agreement, expressed or implied, is intended to confer upon any party, other
than the parties hereto, and their respective successors except as assigns, any
rights, remedies, obligations or liabilities under or by reason of this Stock
Option Agreement, except as expressly provided herein.

                 22.  Terms used in this Stock Option Agreement and not defined
herein but defined in the Agreement shall have the meanings assigned thereto in
the Agreement.

         IN WITNESS WHEREOF, each of the parties has caused this Stock Option
Agreement to be executed on its behalf by their officers thereunto duly
authorized, all as of the date first above written.


                                           NATIONAL CITY CORPORATION

                                             By:  /s/  David A. Daberko
                                                  -----------------------------

                                             Title:  President & CEO
                                                     --------------------------



                                          INTEGRA FINANCIAL CORPORATION

                                             By:  /s/  William F. Roemer
                                                  -----------------------------

                                             Title:  Chairman & CEO
                                                     -------------------------





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