LORD ABBETT MID CAP VALUE FUND INC
497, 1997-11-10
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LORD ABBETT MID-CAP
VALUE FUND, INC.
THE GENERAL MOTORS BUILDING
767 FIFTH AVENUE
NEW YORK, NY 10153-0203
800-426-1130

LORD ABBETT MID-CAP VALUE FUND, INC. ("WE" OR THE "FUND"), IS A MUTUAL FUND WITH
FOUR CLASSES OF SHARES.  THESE  CLASSES,  DESIGNATED  CLASS A, B, C AND P SHARES
PROVIDE INVESTORS WITH DIFFERENT  INVESTMENT OPTIONS IN PURCHASING SHARES OF THE
FUND. SEE  "PURCHASES"  FOR A DESCRIPTION  OF THESE CHOICES.  THE CLASS P SHARES
WILL BE OFFERED TO THE PUBLIC FOR THE FIRST TIME ON OR ABOUT  NOVEMBER 10, 1997.
WE SEEK CAPITAL APPRECIATION THROUGH INVESTMENTS  PRIMARILY IN EQUITY SECURITIES
WHICH  ARE  BELIEVED  TO BE  UNDERVALUED  IN THE  MARKETPLACE.  THERE  CAN BE NO
ASSURANCE THAT OUR OBJECTIVE WILL BE ACHIEVED. INCOME IS NOT AN OBJECTIVE OF THE
FUND,  BUT MAY ARISE  INCIDENTALLY  IN PURSUIT OF OUR BASIC  OBJECTIVE.  WE WILL
ENDEAVOR TO ACHIEVE A MEASURE OF PRICE APPRECIATION THAT IS GREATER THAN THAT OF
THE  BROAD  MARKET  AVERAGES  OVER  THE  COURSE  OF A FULL  MARKET  CYCLE.  THIS
PROSPECTUS  SETS  FORTH  CONCISELY  THE  INFORMATION   ABOUT  THE  FUND  THAT  A
PROSPECTIVE INVESTOR SHOULD KNOW BEFORE INVESTING.  ADDITIONAL INFORMATION ABOUT
THE  FUND HAS BEEN  FILED  WITH THE  SECURITIES  AND  EXCHANGE  COMMISSION.  THE
STATEMENT OF  ADDITIONAL  INFORMATION  IS  INCORPORATED  BY REFERENCE  INTO THIS
PROSPECTUS  AND MAY BE OBTAINED,  WITHOUT  CHARGE,  BY WRITING TO THE FUND OR BY
CALLING  800-874-3733.  ASK FOR "PART B OF THE  PROSPECTUS  -- THE  STATEMENT OF
ADDITIONAL  INFORMATION."  THE DATE OF THIS  PROSPECTUS  AND OF THE STATEMENT OF
ADDITIONAL INFORMATION IS MAY 1, 1997, AS SUPPLEMENTED ON NOVEMBER 10, 1997.

PROSPECTUS  INVESTORS  SHOULD  READ  AND  RETAIN  THIS  PROSPECTUS.  SHAREHOLDER
INQUIRIES SHOULD BE MADE IN WRITING TO THE FUND OR BY CALLING 800-821-5129.  YOU
ALSO CAN MAKE INQUIRIES THROUGH YOUR  BROKER-DEALER.  SHARES OF THE FUND ARE NOT
DEPOSITS OR  OBLIGATIONS  OF, OR  GUARANTEED  OR ENDORSED BY, ANY BANK,  AND THE
SHARES ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT  INSURANCE  CORPORATION,
THE FEDERAL  RESERVE  BOARD,  OR ANY OTHER  AGENCY.  AN  INVESTMENT  IN THE FUND
INVOLVES RISKS, INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.

        CONTENTS                            PAGE

        1       Investment Objective         2

        2       Fee Table                    2

        3       Financial Highlights         3

        4       How We Invest                3

        5       Purchases                    4

        6       Shareholder Services        13

        7       Our Management              14

        8       Dividends, Capital Gains
                Distributions and Taxes     14

        9       Redemptions                 15

        10      Performance                 16

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

<PAGE>
1 INVESTMENT OBJECTIVE

Our investment  objective is to seek capital  appreciation  through investments,
primarily  in equity  securities,  which are believed to be  undervalued  in the
marketplace.

2 FEE TABLE

A summary of the Fund's  expenses is set forth in the table  below.  The example
should not be considered a  representation  of past or future  expenses.  Actual
expenses may be greater or less than those shown.
<TABLE>
<CAPTION>

                                             CLASS A        CLASS B                            CLASS C             CLASS P
                                             SHARES         SHARES                             SHARES              SHARES

<S>                                          <C>            <C>                                <C>                 <C>   
SHAREHOLDER TRANSACTION EXPENSES(1)
(AS A PERCENTAGE OF OFFERING PRICE)
Maximum Sales Load(2) on Purchases
(See "Purchases")                            5.75%          None                               None                None

Deferred Sales Load(2) (See "Purchases")     None           5% if shares are redeemed          1% if shares        None
                                                            before 1st anniversary             are redeemed
                                                            of purchase, declining             before 1st anniversary
                                                            to 1% before 6th                   of purchase
                                                            anniversary and
                                                            eliminated on and
                                                            after 6th anniversary(3)

ANNUAL FUND OPERATING EXPENSES(4)
(AS A PERCENTAGE OF AVERAGE NET ASSETS) 
Management Fees (See "Our Management")       0.73%          0.73%                              0.73%               0.73%
12b-1 Fees (See "Purchases")(1)(2)           0.22%          1.00%                              1.00%               0.45%
Other Expenses (See "Our Management")        0.28%          0.28%                              0.28%               0.28%

Total Operating Expenses                     1.23%          2.01%                              2.01%               1.46%


EXAMPLE:  Assume an  annual  return of 5% and there is no change in the level of
expenses  described above.  For a $1,000  investment,  with  reinvestment of all
dividends  and  distributions,  you  would  pay the  following  total  expenses,
assuming redemption on the last day of each period indicated.

                    1 year    3 years   5 years   10 years

Class A shares      $70       $95       $121      $198
Class B shares(3)   $70       $93       $128      $213
Class C shares      $30       $63       $108      $234
Class P shares      $15       $46        $80      $175

EXAMPLE:  You would pay the following expenses on the same investment,  assuming
no redemption.

                    1 year    3 years   5 years   10 years

Class A shares      $70       $95       $121      $198
Class B shares(3)   $20       $63       $108      $213
Class C shares      $20       $63       $108      $234
Class P shares      $15       $46        $80      $175
<FN>
(1)Although  the Fund does  not,  with  respect  to the Class B, C and P shares,
charge a  front-end  sales  charge,  investors  should be aware  that  long-term
shareholders  may pay,  under each Rule 12b-1 plan  applicable to the Class B, C
and P shares of the Fund (which pays annually 0.20%, for service, in the case of
Class P, and  0.25% for  service,  in the case of Class B and C and  0.25%,  for
distribution, in the case of Class P, and 0.75% for distribution, in the case of
Class B and C), more than the economic equivalent of the maximum front-end sales
charge as permitted by certain rules of the National  Association  of Securities
Dealers,  Inc.  Likewise,  with respect to Class A shares,  investors  should be
aware that,  over the long term,  such  maximum may be exceeded  due to the Rule
12b-1 plan  applicable  to Class A shares  which  permits  the Fund to pay up to
0.50%  in  total  annual  fees,   half  for  service  and  the  other  half  for
distribution.  The 12b-1  fees for the  Class A shares  have  been  restated  to
reflect the current fees under the recently amended Class A 12b-1 Plans.

(2)Sales  "load" is  referred  to as sales  "charge,"  "deferred  sales load" is
referred to as  "contingent  deferred sales charge" (or "CDSC") and "12b-1 fees"
which  consist of a "service  fee" and a  "distribution  fee" are referred to by
either or both of these terms where  appropriate  with  respect to Class A, B, C
and P shares throughout this Prospectus.

(3)Class  B shares  will  automatically  convert to Class A shares on the eighth
anniversary of the purchase of Class B shares.

(4)The annual operating  expenses for the Class A shares have been restated from
December  31,  1996  fiscal-year  amounts to reflect  current  fees.  The annual
operating  expenses  for the  Class B, C and P  shares  are  based on  estimated
expenses incurred by Class A shares because these classes were not available for
purchase prior to the Fund's current fiscal year.
</FN>

The  foregoing  is provided  to give  investors  a better  understanding  of the
expenses that are incurred by an investment in the Fund.
</TABLE>
<PAGE>

3 FINANCIAL HIGHLIGHTS

The following  financial  highlights have been audited by Deloitte & Touche LLP,
independent accountants,  whose report thereon is incorporated by reference into
the Statement of Additional Information and may be obtained upon request.
<TABLE>
<CAPTION>

                                                                                                                TEN MONTHS YEAR
                                                                                                                ENDED      ENDED
PER CLASS A SHARE+ OPERATING                            YEAR ENDED DECEMBER 31,                                 DEC. 31,   FEB. 28,
PERFORMANCE:                            1996    1995    1994    1993    1992    1991    1990    1989    1988    1987*      1987
<S>                                     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>        <C>
NET ASSET VALUE, BEGINNING OF PERIOD    $12.18  $11.25  $12.65  $12.60  $11.81  $9.80   $10.59  $9.53   $9.09   $14.59     $13.25
INCOME FROM INVESTMENT OPERATIONS
Net investment income                      .13     .162    .18     .16     .20    .23      .28    .29     .34      .30        .32
Net realized and unrealized
gain (loss) on securities                 2.19    2.383   (.545)  1.42    1.31   2.30     (.77)  1.57    1.08    (2.24)      2.11
Total from investment operations          2.32    2.545   (.365)  1.58    1.51   2.53     (.49)  1.86    1.42    (1.94)      2.43

DISTRIBUTIONS
Dividends from net investment income      (.16)   (.17)   (.16)   (.20)   (.22)  (.26)    (.30)  (.32)    .--     (.61)      (.23)
Distributions from net realized gain     (1.05)  (1.445)  (.875) (1.33)   (.50)  (.26)     .--   (.48)   (.98)   (2.95)      (.86)
NET ASSET VALUE, END OF PERIOD  $13.29  $12.18  $11.25  $12.65  $12.60  $11.81  $9.80   $10.59  $9.53   $9.09   $14.59

TOTAL RETURN**                           21.22%  26.09%  (3.27)% 13.95%  13.46% 27.36%  (4.64)% 20.09%  15.62%  (16.40)%++  19.55%

RATIOS TO AVERAGE NET ASSETS:
Expenses                                  1.22%   1.27%   1.12%   1.22%   1.22%  1.14%   1.12%    .94%   1.02%     .81%++     .89%
Net investment income                     1.12%   1.48%   1.53%   1.35%   1.71%  2.16%   2.79%   2.91%   3.41%    2.42%++    2.42%

                                                                                                                TEN MONTHS YEAR
                                                                                                                ENDED      ENDED
                                                          YEAR ENDED DECEMBER 31,                               DEC. 31,   FEB. 28,
SUPPLEMENTAL DATA FOR ALL CLASSES: 1996    1995     1994     1993     1992     1991     1990     1989     1988     1987*    1987
<S>                                <C>     <C>     <C>       <C>     <C>      <C>       <C>      <C>      <C>      <C>      <C>
Net assets, end of period (000)  $257,148 $227,149 $190,788 $202,519 $173,380 $166,056 $155,018 $190,189 $188,380 $223,288 $318,793
Portfolio turnover rate           38.88%   41.42%    57.49%   33.42%   62.55%   34.20%   51.49%   30.42%   26.53%   43.97%  52.41%
Average commissions per share
paid on equity transactions      $  .064  $  .066   ----     ----     ----     ----      ----     ----     ----     ----    ----
<FN>

    *The Financial  Statements  cover ten months because the fiscal year-end was
changed from February 28 to December 31.

  **Total return does not consider the effects of sales loads.

   + The Fund had only one class of shares  prior to May 1, 1997.  That class of
shares is now designated Class A shares.

   ++ Not annualized.
      See Notes to Financial Statements.
</FN>
</TABLE>

4 HOW WE INVEST

We invest  primarily in common stocks  (including  securities  convertible  into
common  stocks) of companies  with good  prospects for  improvement  in earnings
trends or asset  values  that are not yet  fully  recognized  in the  investment
community.  Selection  of stocks  is based on  appreciation  potential,  without
regard to current income. Under normal circumstances, at least 65% of the Fund's
total assets will consist of investments in mid-cap companies, determined at the
time of purchase.  "Mid-cap companies" are defined for this purpose as companies
whose  outstanding  equity  securities have an aggregate market value of between
$200 million and $5 billion.

Our investment  portfolio is  diversified  among many issues  representing  many
different  industries.  The holdings in our portfolio typically are selected for
their potential for significant market  appreciation from growing recognition of
substantial  improvement  in  the  company's  financial  results  or  increasing
anticipation of such improvement. This potential may derive from such factors as
(i) changes in the  economic  and  financial  environment,  (ii) new or improved
products or services,  (iii) new or rapidly expanding  markets,  (iv) changes in
<PAGE>
management or structure of the company,  (v) price increases due to shortages of
resources or productive capacity,  (vi) improved efficiencies resulting from new
technologies  or  changes  in  distribution  or (vii)  changes  in  governmental
regulations,   political  climate  or  competitive  conditions.   The  companies
represented  will have a strong or, in our  perception,  an improving  financial
position.  The outstanding  stock of companies in our portfolio  ordinarily will
have an aggregate market value of not less than  approximately  $50 million.  At
the time of  purchase,  the stocks may be largely  neglected  by the  investment
community  or,  if  widely  followed,  they  may  be out of  favor  or at  least
controversial.  While  we may  take  short-term  gains  if  deemed  appropriate,
normally we will hold  securities in order to realize  long-term  capital gains.
Characteristically,  we will not carry a large cash  position  as an  investment
strategy;  however,  we may  temporarily  put a portion of our assets in cash or
cash  equivalents  (short-term  obligations of banks,  corporations  or the U.S.
Government) for liquidity purposes or to create reserve purchasing power pending
other  investments.  Since we invest  primarily  in  common  stocks  with  their
inherent  market  risks,  we  cannot,  of  course,  assure  that our  investment
objective will be achieved.  We will not change our investment objective without
shareholder approval. If we determine that our objective can best be achieved by
a substantive change in investment policy or strategy, we may make such a change
without shareholder  approval by disclosing it in our prospectus.  We may invest
up to 10% of our net assets in securities  (of the type  described  above) which
are primarily traded in foreign countries.

RISK  FACTORS.  Securities  markets of foreign  countries are not subject to the
same degree of regulation as the U.S.  markets and may be more volatile and less
liquid  than  the  major  U.S.  markets.  There  may be less  publicly-available
information on  publicly-traded  issuers in foreign  countries than is generally
the case in the United  States.  The lack of uniform  accounting  standards  and
practices  among  countries  impairs  the  validity  of  direct  comparisons  of
valuation  measures (such as price/earnings  ratios) for securities in different
countries.  Other  considerations  include  political  and  social  instability,
expropriation,  higher transaction  costs,  currency  fluctuations,  withholding
taxes that cannot be passed through as a tax credit or deduction to shareholders
and different securities settlement practices.  Foreign securities may be traded
on days that we do not value our portfolio securities and, accordingly,  our net
asset value may be significantly  affected on days when shareholders do not have
access to the Fund.

PORTFOLIO  TURNOVER.  The  portfolio  turnover  rate for the  fiscal  year ended
December 31, 1996 was 38.88% compared to 41.42% for the prior fiscal year.

5 PURCHASES

ALTERNATIVE SALES ARRANGEMENTS

CLASSES OF SHARES.  The Fund offers investors four different  classes of shares.
The different  classes of shares represent  investments in the same portfolio of
securities but are subject to different  expenses and will likely have different
share prices.  Investors  should read this section  carefully to determine which
class represents the best investment option for their particular situation.

CLASS A SHARES.  If you buy Class A shares,  you pay an initial  sales charge on
investments  of less than $1 million (or on investments  for  employer-sponsored
retirement  plans under the Internal  Revenue Code  (hereinafter  referred to as
"Retirement Plans") with less than 100 eligible employees or on investments that
do not qualify to be under a "special  retirement  wrap  program"  defined under
"Class A Share Net Asset Value Purchases" below). If you purchase Class A shares
as part of an investment of at least $1 million (or for Retirement Plans with at
least 100 eligible  employees  or under a special  retirement  wrap  program) in
shares of one or more Lord  Abbett-sponsored  funds, you will not pay an initial
sales  charge,  but if you redeem any of those shares within 24 months after the
month in which you buy them, you may pay to the Fund a contingent deferred sales
charge  ("CDSC") of 1% except for  redemptions  under a special  retirement wrap
program.  Class A shares are subject to service and  distribution  fees that are
<PAGE>
currently estimated to total annually approximately 0.22 of 1% of the annual net
asset value of the Class A shares.  The initial sales charge rates, the CDSC and
the Rule  12b-1  plan  applicable  to the  Class A shares  are  described  under
"General" below.

CLASS B SHARES.  If you buy Class B shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the sixth  anniversary  of
buying them, you will normally pay a CDSC to Lord Abbett  Distributor LLC ("Lord
Abbett  Distributor").  That CDSC varies  depending  on how long you own shares.
Class B shares are subject to service and distribution fees at an annual rate of
1% of the  annual net asset  value of the Class B shares.  The CDSC and the Rule
12b-1 plan applicable to the Class B shares are described under "General" below.

CLASS C SHARES.  If you buy Class C shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the first  anniversary  of
buying  them,  you will  normally  pay the Fund a CDSC of 1%. Class C shares are
subject to service and  distribution  fees at an annual rate of 1% of the annual
net  asset  value of the  Class C  shares.  The CDSC  and the  Rule  12b-1  plan
applicable to the C shares are described under "General" below.

CLASS P SHARES.  If you buy Class P shares,  you pay no sales charge at the time
of purchase,  and if you redeem your shares you pay no CDSC.  Class P shares are
subject to service and  distribution  fees at an annual rate of .45 of 1% of the
average  daily  net  asset  value of the Class P  shares.  The Rule  12b-1  plan
applicable  to the Class P shares is  described  in "Class P Rule  12b-1  Plan".
Class P shares  are  available  to a  limited  number of  investors  who are not
necessarily eligible for the other classes of shares offered by this Prospectus.
See "Buying Class P shares" below.

WHICH  CLASS OF SHARES  SHOULD YOU  CHOOSE?  Once you decide that the Fund is an
appropriate  investment  for you,  the  decision  as to which class of shares is
better  suited to your needs  depends  on a number of  factors  which you should
discuss with your financial adviser. The Fund's class-specific  expenses and the
effect of the different  types of sales charges on your  investment  will affect
your investment  results over time. The most important  factors are how much you
plan to invest and how long you plan to hold your investment.  If your goals and
objectives  change over time and you plan to  purchase  additional  shares,  you
should  re-evaluate those factors to see if you should consider another class of
shares.

In the following discussion, to help provide you and your financial adviser with
a framework in which to choose a class,  we have made some  assumptions  using a
hypothetical  investment  in the Fund. We used the sales charge rates that apply
to  Class  A,  Class B and  Class C and  considered  the  effect  of the  higher
distribution  fees on Class B and  Class C  expenses  (which  will  affect  your
investment  return). Of course, the actual performance of your investment cannot
be predicted and will vary, based on the Fund's actual investment  returns,  the
operating  expenses  borne by each class of shares,  and the class of shares you
purchase.  The factors briefly discussed below are not intended to be investment
advice,  guidelines  or  recommendations,   because  each  investor's  financial
considerations are different. The discussion below of the factors to consider in
purchasing a particular  class of shares assumes that you will purchase only one
class of shares and not a combination of shares of different classes.

HOW LONG DO YOU EXPECT TO HOLD YOUR  INVESTMENT?  While future  financial  needs
cannot be  predicted  with  certainty,  knowing how long you expect to hold your
investment  will assist you in selecting the  appropriate  class of shares.  For
example,  over time, the reduced sales charges available for larger purchases of
Class A shares may offset the effect of paying an initial  sales  charge on your
investment,  compared to the effect over time of higher class-specific  expenses
on Class B or Class C shares for which no initial sales charge is paid.  Because
of the effect of  class-based  expenses,  your choice  should also depend on how
much you plan to invest.

INVESTING FOR THE SHORT TERM. If you have a short-term  investment horizon (that
is,  you plan to hold your  shares  for not more  than six  years),  you  should
probably  consider  purchasing  Class A or Class C shares  rather  than  Class B
shares.  This is because of the effect of the Class B CDSC if you redeem  before
the sixth  anniversary  of your  purchase,  as well as the effect of the Class B
distribution  fee on the  investment  return for that  class in the short  term.
<PAGE>

Class C shares might be the  appropriate  choice  (especially for investments of
less than $100,000), because there is no initial sales charge on Class C shares,
and the CDSC does not apply to shares  you  redeem  after  holding  them for one
year.

However,  if you plan to invest more than $100,000 for the short term,  then the
more you invest and the more your investment horizon increases toward six years,
the more  attractive  the Class A share  option may become.  This is because the
annual  distribution  fee on Class C shares  will have a greater  impact on your
account over the longer term than the reduced  front-end sales charge  available
for larger  purchases of Class A shares.  For  example,  Class A shares might be
more  appropriate  than Class C shares  for  investments  of more than  $100,000
expected to be held for 5 or 6 years (or more).  For  investments  over $250,000
expected  to be held 4 to 6 years (or  more),  Class A shares  may  become  more
appropriate than Class C shares. If you are investing  $500,000 or more, Class A
shares may become more desirable as your investment  horizon  approaches 3 years
or more.

For most investors who invest $1 million or more,  for Retirement  Plans with at
least 100 eligible employees or for investments pursuant to a special retirement
wrap program, in most cases Class A shares will be the most advantageous choice,
no matter how long you intend to hold your shares. For that reason,  Lord Abbett
Distributor  normally will not accept  purchase orders (i) for Class B shares of
$500,000  or more and for  Class C shares  of  $1,000,000  or more from a single
investor or (ii) for Class B or C shares (a) from Retirement Plans with at least
100 eligible employees or (b) from special retirement wrap programs.

INVESTING  FOR THE LONGER TERM.  If you are  investing  for the longer term (for
example,  to provide  for future  college  expenses  for your  child) and do not
expect to need access to your money for seven years or more,  Class B shares may
be an appropriate investment option if you plan to invest less than $100,000. If
you plan to invest more than  $100,000  over the long term,  Class A shares will
likely be more  advantageous than Class B shares or Class C shares, as discussed
above,  because of the effect of the expected  lower expenses for Class A shares
and the reduced initial sales charges available for larger  investments in Class
A shares under the Fund's rights of accumulation.

Of course,  these examples are based on  approximations of the effect of current
sales charges and expenses on a  hypothetical  investment  over time, and should
not be relied on as rigid guidelines.

ARE THERE  DIFFERENCES  IN ACCOUNT  FEATURES  THAT MATTER TO YOU?  Some  account
features  are  available  in whole or in part to  Class A,  Class B and  Class C
shareholders.  Other features (such as Systematic Withdrawal Plans) might not be
advisable in non-Retirement  Plan accounts for Class B shareholders  (because of
the effect of the CDSC on the entire  amount of a  withdrawal  if it exceeds 12%
annually) and in any account for Class C  shareholders  during the first year of
share  ownership  (due  to the  CDSC  on  withdrawals  during  that  year).  See
"Systematic  Withdrawal Plan" under "Shareholder  Services" for more information
about the 12%  annual  waiver of the CDSC with  respect  to Class B shares.  You
should  carefully  review  how you plan to use your  investment  account  before
deciding  which class of shares you buy. For example,  the dividends  payable to
Class B and Class C shareholders will be reduced by the expenses borne solely by
each of these classes,  such as the higher distribution fee to which Class B and
Class C shares are subject, as described below.

HOW DOES IT AFFECT PAYMENTS TO MY BROKER?  A salesperson,  such as a broker,  or
any other person who is entitled to receive compensation for selling Fund shares
may  receive  different  compensation  for  selling  one class than for  selling
another class. As discussed in more detail below, such compensation is primarily
paid at the time of sale in the case of  Class A and B shares  and is paid  over
time, so long as shares remain outstanding, in the case of Class C shares. It is
important that investors understand that the primary purpose of the CDSC for the
Class B shares  and the  distribution  fee for Class B and Class C shares is the
same as the purpose of the front-end sales charge on sales of Class A shares: to
compensate  brokers and other persons selling such shares. The CDSC, if payable,
<PAGE>

supplements  the Class B  distribution  fee and reduces the Class C distribution
fee expenses for the Fund and Class C shareholders.

GENERAL

HOW  MUCH  MUST YOU  INVEST?  You may buy our  shares  through  any  independent
securities  dealer having a sales  agreement with Lord Abbett  Distributor,  our
exclusive selling agent. Place your order with your investment dealer or send it
to Lord Abbett Mid-Cap Value Fund, Inc. (P.O. Box 419100,  Kansas City, Missouri
64141).  The minimum initial  investment is $1,000 except for Invest-A-Matic and
Div-Move  ($250 initial and $50 subsequent  minimum) and  Individual  Retirement
Accounts ($250  minimum).  For Retirement  Plans there is no minimum  investment
required. See "Shareholder  Services." For information regarding the proper form
of a purchase or redemption order, call the Fund at 800-821-5129.  This offering
may be suspended,  changed or withdrawn.  Lord Abbett  Distributor  reserves the
right to reject any order.

The net asset value of our shares is  calculated  every  business  day as of the
close of the New York Stock  Exchange  ("NYSE")  by  dividing  net assets by the
number of shares  outstanding.  Securities  are valued at their  market value as
more fully described in the Statement of Additional Information.

BUYING SHARES THROUGH YOUR DEALER.  Orders for shares received by the Fund prior
to the  close of the  NYSE,  or  received  by  dealers  prior to such  close and
received by Lord Abbett Distributor prior to the close of its business day, will
be confirmed at the  applicable  public  offering  price  effective at such NYSE
close.  Orders  received by dealers  after the NYSE closes and  received by Lord
Abbett  Distributor  in proper form prior to the close of its next  business day
are executed at the applicable  public  offering price effective as of the close
of the NYSE on that next business day. The dealer is responsible  for the timely
transmission  of orders to Lord Abbett  Distributor.  A business day is a day on
which the NYSE is open for trading.

Lord Abbett Distributor may, for specified periods,  allow dealers to retain the
full sales charge for sales of shares during such periods,  or pay an additional
concession to a dealer who,  during a specified  period,  sells a minimum dollar
amount of our shares and/or shares of other Lord Abbett-sponsored funds. In some
instances,  such additional  concessions will be offered only to certain dealers
expected to sell  significant  amounts of shares.  Lord Abbett  Distributor may,
from time to time, implement promotions under which Lord Abbett Distributor will
pay a fee to dealers with respect to certain purchases not involving  imposition
of  a  sales  charge.   Additional   payments  may  be  paid  from  Lord  Abbett
Distributor's  own  resources  and  will  be made in the  form  of cash  or,  if
permitted,  non-cash  payments.  The non-cash  payments  will  include  business
seminars at resorts or other locations,  including meals and  entertainment,  or
the receipt of  merchandise.  The cash payments will include  payment of various
business  expenses  of the dealer.  In  selecting  dealers to execute  portfolio
transactions  for the Fund's  portfolio,  if two or more dealers are  considered
capable of obtaining best  execution,  we may prefer the dealer who has sold our
shares and/or shares of other Lord Abbett-sponsored funds.

BUYING  CLASS A  SHARES.  The  offering  price of Class A shares is based on the
per-share  net asset value next  computed  after your order is  accepted  plus a
sales charge as follows.

                        SALES CHARGE AS A            DEALER'S
                        PERCENTAGE OF:               CONCESSION
                                                       AS A           TO COMPUTE
                                        NET          PERCENTAGE        OFFERING
                        OFFERING        AMOUNT       OF OFFERING   PRICE, DIVIDE
SIZE OF INVESTMENT      PRICE           INVESTED     PRICE              NAV BY

Less than $50,000       5.75%           6.10%         5.00%             .9425
$50,000 to $99,999      4.75%           4.99%         4.00%             .9525
$100,000 to $249,999    3.75%           3.90%         3.25%             .9625
$250,000 to $499,999    2.75%           2.83%         2.25%             .9725
$500,000 to $999,999    2.00%           2.04%         1.75%             .9800
$1,000,000 or more       No sales charge              1.00%+           1.0000

+AUTHORIZED  INSTITUTIONS  RECEIVE CONCESSIONS ON PURCHASES MADE BY A RETIREMENT
PLAN,  PURSUANT TO A SPECIAL  RETIREMENT  WRAP  PROGRAM OR BY ANOTHER  QUALIFIED
PURCHASER  WITHIN A 12-MONTH  PERIOD  (BEGINNING  WITH THE FIRST NET ASSET VALUE
PURCHASE) AS FOLLOWS:  1.00% ON  PURCHASES  OF $5 MILLION,  0.55% OF THE NEXT $5
MILLION,  0.50% OF THE NEXT $40 MILLION AND 0.25% ON PURCHASES OVER $50 MILLION.
SEE "CLASS A RULE 12B-1 PLAN" BELOW.


CLASS A SHARE VOLUME  DISCOUNTS.  This section describes several ways to qualify
for a lower  sales  charge  when  purchasing  Class A shares if you inform  Lord
Abbett  Distributor  or the Fund that you are  eligible at the time of purchase.
<PAGE>
(1) Any purchaser (as described below) may aggregate a Class A share purchase in
the Fund with any share  purchases of any other  eligible Lord  Abbett-sponsored
fund, together with the current value at maximum offering price of any shares in
the Fund and in any eligible Lord Abbett-sponsored  funds held by the purchaser.
(Holdings  in the  following  funds are not  eligible  for the  above  rights of
accumulation:  Lord  Abbett  Equity  Fund  ("LAEF"),  Lord  Abbett  Series  Fund
("LASF"),  any series of Lord  Abbett  Research  Fund not offered to the general
public  ("LARF") and Lord Abbett U.S.  Government  Securities  Money Market Fund
("GSMMF"),  except for  holdings in GSMMF which are  attributable  to any shares
exchanged  from  a Lord  Abbett-sponsored  fund.)  (2) A  purchaser  may  sign a
non-binding  13-month  statement of  intention to invest  $50,000 or more in any
shares  of the  Fund or in any of the  above  eligible  funds.  If the  intended
purchases  are  completed  during the period,  the total amount of your intended
purchases  of any shares will  determine  the reduced  sales charge rate for the
Class A shares purchased during the period. If not completed, each Class A share
purchase  will be at the sales  charge for the  aggregate  of the  actual  share
purchases. Shares issued upon reinvestment of dividends or distributions are not
included in the statement of  intention.  The term  "purchaser"  includes (i) an
individual,  (ii) an individual and his or her spouse and children under the age
of 21 and (iii) a trustee  or other  fiduciary  purchasing  shares  for a single
trust estate or single fiduciary account  (including a pension,  profit-sharing,
or other  employee  benefit  trust  qualified  under Section 401 of the Internal
Revenue  Code -- more  than one  qualified  employee  benefit  trust of a single
employer,  including its consolidated  subsidiaries,  may be considered a single
trust, as may qualified plans of multiple employers  registered in the name of a
single bank  trustee as one  account),  although  more than one  beneficiary  is
involved.

CLASS A SHARE NET ASSET VALUE PURCHASES.  Our Class A shares may be purchased at
net asset value by our  directors,  employees of Lord  Abbett,  employees of our
shareholder  servicing  agent and  employees of any  securities  dealer having a
sales  agreement with Lord Abbett  Distributor who consents to such purchases or
by the trustee or custodian under any pension or profit-sharing  plan or Payroll
Deduction IRA  established for the benefit of such persons or for the benefit of
any national  securities trade  organization to which Lord Abbett or Lord Abbett
Distributor  belongs or any company with an  account(s) in excess of $10 million
managed by Lord Abbett on a private-advisory-account basis. For purposes of this
paragraph,  the  terms  "directors"  and  "employees"  include a  director's  or
employee's  spouse  (including  the surviving  spouse of a deceased  director or
employee).  The terms  "directors"  and  "employees of Lord Abbett" also include
other family  members and retired  directors and  employees.  Our Class A shares
also may be  purchased  at net asset  value (a) at $1 million or more,  (b) with
dividends  and  distributions  on Class A shares of other Lord  Abbett-sponsored
funds,  except for dividends and distributions on shares of LARF, LAEF and LASF,
(c) under the loan feature of the Lord  Abbett-sponsored  prototype  403(b) plan
for  Class A  share  purchases  representing  the  repayment  of  principal  and
interest,  (d) by certain authorized  brokers,  dealers,  registered  investment
advisers or other financial institutions who have entered into an agreement with
Lord Abbett  Distributor in accordance with certain  standards  approved by Lord
Abbett Distributor,  providing specifically for the use of our Class A shares in
particular  investment  products  made  available  for a fee to  clients of such
brokers,   dealers,   registered   investment   advisers  and  other   financial
institutions ("mutual fund wrap fee programs"),  (e) by employees,  partners and
owners of  unaffiliated  consultants  and advisers to Lord  Abbett,  Lord Abbett
Distributor or Lord Abbett-sponsored  funds who consent to such purchase if such
persons provide services to Lord Abbett,  Lord Abbett  Distributor or such funds
on a continuing  basis and are familiar with such fund,  (f) through  Retirement
Plans  with  at  least  100  eligible  employees,  (g)  subject  to  appropriate
documentation,  through a securities dealer where the amount invested represents
redemption  proceeds from shares  ("Redeemed  Shares") of a registered  open-end
management  investment  company  not  distributed  or  managed  by  Lord  Abbett
<PAGE>
Distributor or Lord Abbett (other than a money market fund), if such redemptions
have  occurred no more than 60 days prior to the purchase of our Class A shares,
the Redeemed  Shares were held for at least six months prior to  redemption  and
the proceeds of redemption  were maintained in cash or a money market fund prior
to purchase and (h) through a "special  retirement wrap program" sponsored by an
authorized institution having one or more characteristics  distinguishing it, in
the opinion of Lord Abbett Distributor from a mutual fund wrap fee program. Such
characteristics  include,  among  other  things,  the  fact  that an  authorized
institution  does not charge its  clients  any fee of a  consulting  or advisory
nature that is economically  equivalent to the  distribution fee under a Class A
12b-1  plan  and the fact  that  the  program  relates  to  participant-directed
Retirement  Plans.  Purchasers should consider the impact, if any, of contingent
deferred  sales charges in  determining  whether to redeem shares for subsequent
investment in our Class A shares  pursuant to the purchase  option in (g) above.
Lord Abbett  Distributor  may suspend or terminate  the  purchase  option in (g)
above at any time. We plan to terminate the net asset value  transfer  privilege
in (g) on June 1, 1997.

CLASS A RULE 12B-1 PLAN. We have adopted a Class A share Rule 12b-1 plan (the "A
Plan") which authorizes the payment of fees to authorized  institutions  (except
as to certain  accounts for which  tracking  data is not  available) in order to
provide additional incentives for them (a) to provide continuing information and
investment  services to their Class A  shareholder  accounts  and  otherwise  to
encourage  those accounts to remain invested in the Fund and (b) to sell Class A
shares  of the  Fund.  Under  the A Plan,  in  order to save on the  expense  of
shareholders' meetings and to provide flexibility to the Board of Directors, the
Board,  including a majority of the outside  directors  who are not  "interested
persons"  of the Fund as  defined  in the  Investment  Company  Act of 1940,  is
authorized to approve  annual fee payments from our Class A assets of up to 0.50
of 1% of the average net of such assets  consisting of distribution  and service
fees,  each at a  maximum  annual  rate  not  exceeding  0.25 of 1%.  (the  "Fee
Ceiling").

Under the A Plan,  the Board has  approved  payments  by the Fund to Lord Abbett
Distributor  which uses or passes on to  authorized  institutions  (1) an annual
service fee (payable  quarterly) of .25% of the average daily net asset value of
the  Class A shares  serviced  by  authorized  institutions  and (2) a  one-time
distribution fee of up to 1% (reduced according to the following schedule: 1% of
the first $5 million,  .55% of the next $5 million, .50% of the next $40 million
and .25% over $50  million),  payable  at the time of sale on all Class A shares
sold during any  12-month  period  starting  from the day of the first net asset
value sale (i) at the $1 million  level by  authorized  institutions,  including
sales qualifying at such level under the rights of accumulation and statement of
intention  privileges;  (ii) through Retirement Plans with at least 100 eligible
employees or (iii) constituting new sales pursuant to a "special retirement wrap
program"  and  excluding  exchanges  into  the Fund  under  such a  program.  In
addition,  the  Board  has  approved  for those  authorized  institutions  which
qualify,  a supplemental  annual  distribution fee equal to 0.10% of the average
daily net asset value of the Class A shares serviced by authorized  institutions
which have a satisfactory  program for the promotion of such shares comprising a
significant  percentage  of the  Class  A  assets,  with a  lower  than  average
redemption rate.  Institutions and persons permitted by law to receive such fees
are "authorized institutions."

Under the A Plan, Lord Abbett  Distributor is permitted to use payments received
to provide continuing  services to Class A shareholder  accounts not serviced by
authorized  institutions and, with Board approval, to finance any activity which
is primarily intended to result in the sale of Class A shares. Any such payments
are subject to the Fee Ceiling.  Any  payments  under that Plan not used by Lord
Abbett Distributor in this manner are passed on to authorized institutions.

Holders of Class A shares on which the 1% sales  distribution  fee has been paid
may be  required to pay to the Fund on behalf of its Class A shares a CDSC of 1%
of the  original  cost or the then net asset value,  whichever  is less,  of all
Class A shares so purchased which are redeemed out of the Lord  Abbett-sponsored
<PAGE>
family of funds on or before the end of the twenty-fourth  month after the month
in which the purchase  occurred.  (Exceptions  are made for: (i)  redemptions by
Retirement  Plans  due to any  benefit  payment  such  as Plan  loans,  hardship
withdrawals,  death,  retirement or separation from service with respect to plan
participants  or  the  distribution  of  any  excess   contributions   and  (ii)
participant-directed  redemptions  which  continue  as  program  investments  in
another fund participating in a "special retirement wrap program.") If the Class
A shares have been  exchanged  into another Lord  Abbett-sponsored  fund and are
thereafter  redeemed out of the Lord Abbett family of funds on or before the end
of such twenty-fourth month, the charge will be collected for the Fund's Class A
shares by the other  fund.  The Fund will  collect  such a charge for other Lord
Abbett-sponsored funds in a similar situation.

BUYING  CLASS B SHARES.  Class B shares  are sold at net  asset  value per share
without an initial  sales  charge.  However,  if Class B shares are redeemed for
cash before the sixth anniversary of their purchase, a CDSC may be deducted from
the redemption proceeds. That sales charge will not apply to shares purchased by
the reinvestment of dividends or capital gains distributions. The charge will be
assessed  on the  lesser  of the net  asset  value of the  shares at the time of
redemption  or the  original  purchase  price.  The Class B CDSC is paid to Lord
Abbett Distributor to compensate it for its services rendered in connection with
the distribution of Class B shares, including the payment and financing of sales
commissions. See "Class B Rule 12b-1 Plan" below.

To determine  whether the CDSC applies to a redemption,  the Fund redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital  gains  distributions,  (2) shares held until the sixth  anniversary  of
their  purchase  or later,  and (3)  shares  held the  longest  before the sixth
anniversary of their purchase.

The amount of the CDSC will depend on the number of years since you invested and
the dollar amount being redeemed, according to the following schedule.

ANNIVERSARY
OF THE DAY ON                   CONTINGENT DEFERRED 
WHICH THE PURCHASE              SALES CHARGE ON
ORDER WAS ACCEPTED              REDEMPTIONS 
                                (AS % OF AMOUNT
On              Before          SUBJECT TO CHARGE)
                1st             5.0%
1st             2nd             4.0%
2nd             3rd             3.0%
3rd             4th             3.0%
4th             5th             2.0%
5th             6th             1.0%
on or after the                 None
6th anniversary


In the table,  an  "anniversary"  is the 365th day subsequent to a purchase or a
prior  anniversary.  All  purchases  are  considered  to have  been  made on the
business  day the  purchase was made.  See "Buying  Shares  Through Your Dealer"
above.

If  Class  B  shares  are  exchanged   into  the  same  class  of  another  Lord
Abbett-sponsored  fund and the new shares  are  subsequently  redeemed  for cash
before the sixth anniversary of the original purchase,  the CDSC will be payable
on the new shares on the basis of the time elapsed  from the original  purchase.
The Fund will collect such a charge for other Lord  Abbett-sponsored  funds in a
similar situation.

WAIVER OF CLASS B SALES CHARGES.  The Class B CDSC will not be applied to shares
purchased in certain types of transactions  nor will it apply to shares redeemed
in certain circumstances as described below.

The Class B CDSC will be waived for redemptions of shares (i) in connection with
the  Systematic  Withdrawal  Plan and  Div-Move  services,  as described in more
detail under  "Shareholder  Services" below, (ii) by Retirement Plans due to any
benefit payment such as Plan loans, hardship withdrawals,  death,  retirement or
separation from service with respect to plan participants or the distribution of
any excess contributions, (iii) in connection with mandatory distributions under
403(b) plans and individual  retirement accounts and (iv) in connection with the
death of the shareholder.

CLASS B RULE 12B-1  PLAN.  The Fund has  adopted a Class B share Rule 12b-1 Plan
(the "B Plan") under which the Fund  periodically  pays Lord Abbett  Distributor
(i) an annual  service fee of 0.25 of 1% of the average daily net asset value of
<PAGE>
the  Class B shares  and (ii) an  annual  distribution  fee of 0.75 of 1% of the
average  daily net asset  value of the Class B shares that are  outstanding  for
less than eight years.

Lord  Abbett   Distributor  uses  the  service  fee  to  compensate   authorized
institutions  (except  as to certain  accounts  for which  tracking  data is not
available)  for  providing  personal  services  for  accounts  that hold Class B
shares. Those services are similar to those provided under the A Plan, described
above.

Lord Abbett  Distributor  pays an up-front  payment to  authorized  institutions
totalling 4%,  consisting of 0.25% for service and 3.75% for a sales  commission
as described below.

Lord Abbett Distributor pays the 0.25% service fee to authorized institutions in
advance for the first year after Class B shares have been sold by the authorized
institutions.  After  the  shares  have  been  held  for  a  year,  Lord  Abbett
Distributor pays the service fee on a quarterly basis.  Lord Abbett  Distributor
is entitled to retain such service fee payable  under the B Plan with respect to
accounts  for which there is no  authorized  institution  of record or for which
such authorized  institution  did not qualify.  Although not obligated to do so,
Lord Abbett  Distributor  may waive  receipt from the Fund of part or all of the
service fee payments.

The  0.75%  annual  distribution  fee is  paid  to Lord  Abbett  Distributor  to
compensate it for its services  rendered in connection with the  distribution of
Class B shares,  including  the  payment  and  financing  of sales  commissions.
Although Class B shares are sold without a front-end  sales charge,  Lord Abbett
Distributor pays authorized institutions responsible for sales of Class B shares
a sales  commission of 3.75% of the purchase price.  This payment is made at the
time of sale from Lord Abbett Distributor's own resources.  Lord Abbett has made
arrangements to finance these commission  payments,  which arrangements  include
non-recourse  assignments by Lord Abbett  Distributor to the financing  party of
such distribution and CDSC payments concerning Class B shares.

The  distribution  fee and CDSC payments  described above allow investors to buy
Class B shares  without a front-end  sales  charge  while  allowing  Lord Abbett
Distributor to compensate authorized  institutions that sell Class B shares. The
CDSC is intended to supplement Lord Abbett  Distributor's  reimbursement for the
commission  payments it has made with  respect to Class B shares and its related
distribution  and financing  costs. The distribution fee payments are at a fixed
rate and the CDSC payments are of a nature that,  during any year, both forms of
payment may not be  sufficient  to  reimburse  Lord Abbett  Distributor  for its
actual expenses. The Fund is not liable for any expenses incurred by Lord Abbett
Distributor in excess of (i) the amount of such  distribution fee payments to be
received by Lord Abbett Distributor and (ii) unreimbursed  distribution expenses
of Lord Abbett  Distributor  incurred in a prior plan year, subject to the right
of the Board of Directors or shareholders to terminate the B Plan. Over the long
term, the expenses incurred by Lord Abbett  Distributor are likely to be greater
than such  distribution  fee and CDSC  payments.  Nevertheless,  there  exists a
possibility  that for a short-term  period Lord Abbett  Distributor may not have
sufficient expenses to warrant reimbursement by receipt of such distribution fee
payments.  Although  Lord  Abbett  Distributor  does not intend to make a profit
under  the B  Plan,  the  B  Plan  is  considered  a  compensation  plan  (i.e.,
distribution  fees are paid  regardless of expenses  incurred) in order to avoid
the   possibility  of  Lord  Abbett   Distributor  not  being  able  to  receive
distribution fees because of a temporary timing difference between its incurring
expenses and receipt of such distribution fees.

AUTOMATIC  CONVERSION  OF CLASS B  SHARES.  On the  eighth  anniversary  of your
purchase of Class B shares,  those shares will automatically  convert to Class A
shares.  This  conversion  relieves  Class B  shareholders  of the higher annual
distribution fee that applies to Class B shares under the B Plan. The conversion
is based on the  relative  net  asset  values of the two  classes,  and no sales
charge or other charge is imposed.  When Class B shares convert, any other Class
B shares that were acquired by the  reinvestment of dividends and  distributions
will also convert to Class A shares on a pro rata basis. The conversion  feature
is  subject  to the  continued  availability  of an  opinion of counsel or a tax

<PAGE>

ruling  described in "Purchases,  Redemptions and  Shareholder  Services" in the
Statement of Additional Information.

BUYING  CLASS C SHARES.  Class C shares  are sold at net  asset  value per share
without an initial  sales  charge.  However,  if Class C shares are redeemed for
cash  before  the  first  anniversary  of their  purchase,  a CDSC of 1% will be
deducted from the redemption proceeds.  That reimbursement charge will not apply
to  shares   purchased  by  the  reinvestment  of  dividends  or  capital  gains
distributions.  The charge will be assessed on the lesser of the net asset value
of the shares at the time of  redemption  or the original  purchase  price.  The
Class C CDSC is paid to the Fund to reimburse  it, in whole or in part,  for the
service and  distribution  fee payments made by the Fund at the time such shares
were sold, as described below.

To determine  whether the CDSC applies to a redemption,  the Fund redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital gains distributions, (2) shares held for one year or more and (3) shares
held the longest  before the first  anniversary  of their  purchase.  If Class C
shares are exchanged into the same class of another Lord  Abbett-sponsored  fund
and  subsequently  redeemed  before  the  first  anniversary  of their  original
purchase,  the  charge  will be  collected  by the other  fund on behalf of this
Fund's  Class C  shares.  The Fund will  collect  such a charge  for other  Lord
Abbett-sponsored funds in a similar situation.

CLASS C RULE 12B-1  PLAN.  The Fund has  adopted a Class C share Rule 12b-1 Plan
(the "C Plan") under which  (except as to certain  accounts  for which  tracking
data is not available) the Fund pays authorized institutions through Lord Abbett
Distributor  (1) a service  fee and a  distribution  fee, at the time shares are
sold, not to exceed 0.25 and 0.75 of 1%, respectively, of the net asset value of
such shares and (2) at each quarter-end  after the first anniversary of the sale
of shares, fees for services and distribution at annual rates not to exceed 0.25
and 0.75 of 1%,  respectively,  of the  average  annual net asset  value of such
shares  outstanding  (payments with respect to shares not outstanding during the
full  quarter to be  prorated).  These  service  and  distribution  fees are for
purposes  similar to those mentioned above with respect to the A Plan.  Sales in
clause (1) exclude shares issued for reinvested  dividends and distributions and
shares outstanding in clause (2) include shares issued for reinvested  dividends
and distributions after the first anniversary of their issuance.

BUYING CLASS P SHARES.  Class P shares are currently  sold at net asset value to
the trustees of, or  employer-sponsors  with respect to,  pension or  retirement
plans with at least 100 eligible employees (such as a plan under Section 401(a),
401(k)  or 457(b) of the  Internal  Revenue  Code)  which  engage an  investment
professional  providing,  or participating  in an agreement to provide,  certain
recordkeeping, administrative and/or sub-transfer agency services to the Fund on
behalf of the Class P shareholders.

Purchases  and  redemption of Class P shares will be effected at net asset value
by trustees, custodians or employers on behalf of plan participants who will not
deal directly with the Fund.

CLASS P RULE 12B-1  PLAN.  The Fund has  adopted a Class P share Rule 12b-1 Plan
(the "P Plan") which  authorizes the payment of fees to authorized  institutions
(except as to certain  accounts for which  tracking  data is not  available)  in
order to  provide  additional  incentives  for them  (a) to  provide  continuing
information  and investment  services to their Class P shareholder  accounts and
otherwise to encourage  those accounts to remain invested in the Fund and (b) to
sell  Class P shares  of the  Fund.  Under  the P Plan,  in order to save on the
expense of  shareholders'  meetings and to provide  flexibility  to the Board of
Directors,  the Board, including a majority of the outside directors who are not
"interested persons" of the Fund as defined in the Act, is authorized to approve
annual fee  payments  from Class P assets of up to 0.75 of 1% of the average net
asset value of such assets  consisting  of  distribution  and service  fees,  at
maximum annual rates not exceeding 0.50 and 0.25 of 1%,  respectively  (the "Fee
Ceiling").

The Board of Directors has approved  payments from Class P assets to Lord Abbett
Distributor  which uses or passes on to  authorized  institutions  (1) an annual

<PAGE>

service fee  (payable  quarterly)  of 0.20 of 1% of the average  daily net asset
value  of  Class  P  shares  serviced  by  authorized  institutions  and  (2)  a
distribution  fee of up to 0.25 of 1% of the  average  daily net asset  value of
Class P shares sold by authorized  institutions that have a satisfactory program
for the promotion of such shares.  Institutions and persons  permitted by law to
receive such fees are "authorized institutions."

Under the P Plan, Lord Abbett  Distributor is permitted to use payments received
to provide continuing  services to Class P shareholder  accounts not serviced by
authorized  institutions and, with Board approval, to finance any activity which
is primarily intended to result in the sale of Class P shares. Any such payments
are subject to the Fee Ceiling.  Any payments  under the P Plan not used by Lord
Abbett  Distributor  in this  manner are passed on to  authorized  institutions.
Authorized  institutions may receive different  compensation with respect to one
class of Fund shares over the other.

6 SHAREHOLDER SERVICES

We offer the following shareholder services:

TELEPHONE  EXCHANGE  PRIVILEGE:  Shares of any class may be exchanged  without a
service   charge:   (a)  for  shares  of  the  same  class  of  any  other  Lord
Abbett-sponsored  fund  except  for (i)  LAEF,  LASF and  LARF and (ii)  certain
tax-free,  single-state series where the exchanging shareholder is a resident of
a state in which such  series is not  offered for sale and (b) for shares of any
authorized  institution's  affiliated  money market fund  satisfying Lord Abbett
Distributor  as  to  certain  omnibus  account  and  other  criteria  (together,
"Eligible Funds").

You or YOUR REPRESENTATIVE  WITH PROPER  IDENTIFICATION can instruct the Fund to
exchange  uncertificated  shares  of a class  (held by the  transfer  agent)  by
telephone.  Shareholders  have this privilege  unless they refuse it in writing.
The Fund will not be liable for following instructions communicated by telephone
that it reasonably believes to be genuine and will employ reasonable  procedures
to confirm that instructions  received are genuine,  including requesting proper
identification  and  recording  all telephone  exchanges.  Instructions  must be
received  by the Fund in Kansas  City  (800-821-5129)  prior to the close of the
NYSE to  obtain  each  fund's  net  asset  value  per  class  share on that day.
Expedited  exchanges  by  telephone  may be  difficult  to implement in times of
drastic economic or market change.  The exchange privilege should not be used to
take advantage of short-term  swings in the market.  The Fund reserves the right
to  terminate  or limit the  privilege  of any  shareholder  who makes  frequent
exchanges.  The Fund can revoke the privilege for all shareholders upon 60 days'
prior written  notice.  A prospectus  for the other Lord  Abbett-sponsored  fund
selected by you should be obtained and read before an exchange.  Exercise of the
exchange  privilege  will be treated as a sale for federal  income tax  purposes
and, depending on the circumstances, a capital gain or loss may be recognized.

SYSTEMATIC WITHDRAWAL PLAN ("SWP"):  Except for Retirement Plans for which there
is no such minimum,  if the maximum offering price value of your  uncertificated
shares is at least $10,000, you may have periodic cash withdrawals automatically
paid to you in either fixed or variable amounts. With respect to Class B shares,
the CDSC will be waived on  redemptions of up to 12% per year of the current net
asset  value of your  account at the time your SWP is  established.  For Class B
shares (over 12% per year) and C shares,  redemption  proceeds due to a SWP will
be derived from the following  sources in the order listed:  (1) shares acquired
by reinvestment of dividends and capital gains, (2) shares held for six years or
more  (Class B) or one year or more  (Class C); and (3) shares  held the longest
before the sixth  anniversary  of their  purchase  (Class B) or before the first
anniversary of their purchase (Class C). For Class B share  redemptions over 12%
per year, the CDSC will apply to the entire redemption.
Therefore, please contact the Fund for assistance in minimizing the CDSC in this
situation.  Shareholders  should be careful in establishing a SWP, especially to
the extent that such a  withdrawal  exceeds the annual total return for a class,
in which case, the  shareholder's  original  principal will be invaded and, over
time, may be depleted.

DIV-MOVE:  You can  invest  the  dividends  paid on your  account  ($50  minimum

<PAGE>

investment) into an existing account within the same class in any Eligible Fund.
The  account  must be either  your  account,  a joint  account  for you and your
spouse,  a single account for your spouse or a custodial  account for your minor
child under the age of 21. Such  dividends are not subject to a CDSC. You should
read the prospectus of any other fund before investing.

INVEST-A-MATIC:   You  can  make  fixed,   periodic   investments  ($50  minimum
investment)  into the Fund and/or any Eligible Fund by means of automatic  money
transfers from your bank checking account. You should read the prospectus of the
other fund before investing.

RETIREMENT  PLANS:  Lord Abbett makes  available the retirement  plan documents,
including 401(k) plans and custodial agreements for IRAs (Individual  Retirement
Accounts including Simple IRAs and Simplified Employee  Pensions),  403(b) plans
and pension and profit-sharing plans.

HOUSEHOLDING:  A single copy of an annual or semi-annual  report will be sent to
an address to which more than one  registered  shareholder  of the Fund with the
same last name has indicated mail is to be delivered,  unless additional reports
are specifically requested in writing or by telephone.

All  correspondence  should be directed to Lord Abbett Mid-Cap Value Fund,  Inc.
(P.O. Box 419100, Kansas City, Missouri 64141; 800-821-5129).

7 OUR MANAGEMENT

Our business is managed by our officers on a day-to-day  basis under the overall
direction of our Board of Directors. We employ Lord Abbett as investment manager
pursuant to a Management  Agreement.  Lord Abbett has been an investment manager
for over 67 years and currently manages approximately $22 billion in a family of
mutual funds and other advisory accounts.  Under the Management Agreement,  Lord
Abbett provides us with investment  management  services and executive and other
personnel,  pays the  remuneration of our officers and our directors  affiliated
with Lord  Abbett,  provides  us with  office  space and pays for  ordinary  and
necessary office and clerical  expenses  relating to research,  statistical work
and  supervision of our portfolio and certain other costs.  Lord Abbett provides
similar  services to twelve other Lord  Abbett-sponsored  funds  having  various
investment  objectives and also advises other investment clients.  Edward K. von
der Linde,  Executive Vice  President,  has been primarily  responsible  for the
day-to-day  management  of the Fund since  October  1995,  although  he has been
involved  with the Fund's  management  since  1988.  He is assisted by Howard E.
Hansen.  Mr. von der Linde has been with Lord,  Abbett & Co.  since 1988 and has
over 10 years of investment experience.

Under the  Management  Agreement,  the Fund is  obligated  to pay Lord  Abbett a
monthly  fee based on average  daily net assets for each  month.  For the fiscal
year ended  December  31, 1996,  the fee paid to Lord Abbett as a percentage  of
average daily net assets was at the annual rate of .75%. In addition, we pay all
expenses not expressly assumed by Lord Abbett. Our ratio of expenses,  including
management  fee  expenses,  to average  net  assets  for the  fiscal  year ended
December 31, 1996 was 1.22%.

THE FUND.  The Fund is a  diversified  open-end  management  investment  company
incorporated  under  Maryland law on March 14, 1983. Its Class A, B and C shares
have equal rights as to voting,  dividends,  assets and  liquidation  except for
differences resulting from certain class-specific expenses.

8 DIVIDENDS,CAPITAL GAINS DISTRIBUTIONS AND TAXES

Dividends  from net  investment  income  may be taken in cash or  reinvested  in
additional shares at net asset value without a sales charge. If you elect a cash
payment (i) a check will be mailed to you as soon as possible  after the monthly
reinvestment  date or (ii) if you arrange for direct deposit,  your payment will
be wired  directly to your bank  account  within one day after the date on which
the  dividend  is  paid.  Supplemental  dividends  also  may be paid on or about
December 31.

A long-term  capital gains  distribution is made when we have net profits during
the year from sales of  securities  which we have held more than one year. If we
realize net short-term capital gains, they also will be distributed. Any capital
gains distribution will be paid in January.  You may take it in cash or reinvest
it in additional shares at net asset value without a sales charge.

Dividends and  distributions  may be paid in December or January.  Dividends and

<PAGE>

distributions  declared  in  October,  November  or  December  of  any  year  to
shareholders  of record as of a date in such a month will be treated for federal
income tax purposes as having been received by shareholders in that year if they
are paid before February 1 of the following year.

We intend to continue to meet the  requirements  of Subchapter M of the Internal
Revenue Code. We will try to distribute to  shareholders  all our net investment
income and net realized  capital gains, so as to avoid the necessity of the Fund
paying  federal income tax.  Shareholders,  however,  must report  dividends and
capital gains  distributions as taxable income.  Distributions  derived from net
long-term  capital  gains which are  designated  by the Fund as  "capital  gains
dividends" will be taxable to shareholders as long-term  capital gains,  whether
received  in cash or  shares,  regardless  of how long a  taxpayer  has held the
shares.  Under current law, net  long-term  capital gains are taxed at the rates
applicable  to  ordinary  income,  except that the  maximum  rate for  long-term
capital gains for  individuals is 28%.  Legislation has been proposed that would
have the effect of reducing the federal income tax rate on capital gains.

Shareholders may be subject to a $50 penalty under the Internal Revenue Code and
we may be required to withhold and remit to the U.S. Treasury a portion (31%) of
any redemption  proceeds  (including the value of shares  exchanged into another
Lord Abbett-sponsored fund), and of any dividend or distribution on any account,
where  the  payee   (shareholder)   failed   to   provide  a  correct   taxpayer
identification number or to make certain required certifications.

We will  inform  shareholders  of the federal  tax status of each  dividend  and
distribution  after the end of each calendar year.  Shareholders  should consult
their tax advisers  concerning  applicable  state and local taxes as well as the
tax  consequences  of gains or losses  from the  redemption  or  exchange of our
shares.

9 REDEMPTIONS

To obtain the proceeds of an  expedited  redemption  of $50,000 or less,  you or
your representative with proper  identification can telephone the Fund. The Fund
will not be liable for following instructions  communicated by telephone that it
reasonably  believes  to be genuine  and will employ  reasonable  procedures  to
confirm that  instructions  received are genuine,  including  requesting  proper
identification,  recording  all telephone  redemptions  and mailing the proceeds
only  to  the  named  shareholder  at  the  address  appearing  on  the  account
registration.

If you do not qualify for the expedited  procedures  described  above, to redeem
shares directly, send your request to Lord Abbett Mid-Cap Value Fund, Inc. (P.O.
Box  419100,  Kansas  City,  Missouri  64141)  with  signature(s)  and any legal
capacity of the signer(s)  guaranteed by an eligible  guarantor,  accompanied by
any certificates for shares to be redeemed and other required documentation.  We
will  make  payment  of the net  asset  value  of the  shares  on the  date  the
redemption order was received in proper form.  Payment will be made within three
days.  The Fund may suspend  the right to redeem  shares for not more than seven
days or longer under unusual  circumstances  as permitted by Federal law. If you
have  purchased  Fund  shares  by check  and  subsequently  submit a  redemption
request, redemption proceeds will be paid upon clearance of your purchase check,
which may take up to 15 days.  To avoid delays you may arrange for the bank upon
which a check was drawn to  communicate  to the Fund that the check has cleared.
Shares  also  may be  redeemed  by the  Fund at net  asset  value  through  your
securities dealer who, as an unaffiliated  dealer, may charge you a fee. If your
dealer receives your order prior to the close of the NYSE and communicates it to
Lord Abbett, as our agent, prior to the close of Lord Abbett's business day, you
will receive the net asset value of the shares being redeemed as of the close of
the NYSE on that day. If the dealer does not  communicate  such an order to Lord
Abbett until the next  business  day, you will receive the net asset value as of
the close of the NYSE on that next business day.

Shareholders  who have redeemed  their shares have a one-time  right to reinvest
into another  account having the identical  registration  in any of the Eligible

<PAGE>

Funds at the then applicable net asset value of the shares being purchased,  (i)
without the payment of a sales charge or (ii) with reimbursement for the payment
of any CDSC. Such reinvestment must be made within 60 days of the redemption and
is limited to no more than the dollar amount of the redemption proceeds.

Under certain  circumstances  and subject to prior written notice,  our Board of
Directors may authorize  redemption of all of the shares in any account in which
there are fewer than 25 shares.

TAX-QUALIFIED   PLANS:  For  redemptions  of  $50,000  or  less,  follow  normal
redemption  procedures.  Redemptions  over  $50,000  must be in writing from the
employer,  broker or plan  administrator  stating the reason for the redemption.
The  reason  for the  redemption  must be  received  by the Fund  prior  to,  or
concurrent with, the redemption request.

10 PERFORMANCE

The Fund  completed  its fiscal year on December 31, 1996 with a net asset value
of $13.29 per share, versus $11.13 per share one year ago. The latter figure has
been adjusted for capital gains distributions totaling $1.05 per share paid last
January.  In addition,  the Fund paid dividends of $0.16 during the fiscal year.
The Fund's total return (which is the percent change in net asset value assuming
the reinvestment of all  distributions) was 21.22% for the year.  Recently,  the
Fund's Board of  Directors  declared a dividend of $0.15 per share and a capital
gains  distribution  of $1.35 per share.  Both were paid on January  22, 1997 to
shareholders of record on January 15, 1997.

The  past  year  saw  stock  market  averages  climb to new  heights  against  a
background of modest economic growth, low inflation and volatile interest rates.
Within  this  environment,  the Fund's  strong  performance  during  1996 can be
attributed to careful,  research-driven stock selection. Over or underweightings
in  particular  industries  did not have a  significant  impact  on the  overall
portfolio.  The Fund  was  invested  in  select  companies  among a  variety  of
industries.

YIELD AND TOTAL  RETURN.  Yield and total return data may, from time to time, be
included in  advertisements  about the Fund. Each class of shares calculates its
"yield"  by  dividing  the  annualized  net  investment  income per share on the
portfolio  during a 30-day period by the maximum  offering price on the last day
of the  period.  The yield of each class will  differ  because of the  different
expenses  (including actual 12b-1 fees) of each class of shares.  The yield data
represents  a  hypothetical  investment  return on the  portfolio,  and does not
measure investment return based on dividends  actually paid to shareholders.  To
show that return,  a dividend  distribution  rate may be calculated.  A dividend
distribution  rate is  calculated  by dividing the  dividends of a class derived
from net investment  income during a stated period by the maximum offering price
on the last day of the  period.  The yield and  dividend  distribution  rate for
Class A shares  reflect the deduction of the maximum  initial sales charge,  but
may also be shown  based on the  Fund's net asset  value per  share.  Yields for
Class B and Class C shares do not reflect the deduction of the CDSC.

"Total return" for the one-, five- and ten-year  periods  represents the average
annual  compounded  rate of return on an investment of $1,000 in the Fund at the
maximum public offering  price.  When total return is quoted for Class A shares,
it includes the payment of the maximum  initial sales charge.  When total return
is  shown  for  Class B and  Class C  shares,  it  reflects  the  effect  of the
applicable  CDSC.  Total return also may be presented for other periods or based
on investments at reduced sales charge levels or net asset value.  Any quotation
of total return not reflecting the maximum sales charge  (front-end,  level,  or
back-end)  would be reduced if such sales charge were used.  Quotations of yield
or total return for any period when an expense  limitation  is in effect will be
greater than if the limitation had not been in effect. See "Past Performance" in
the Statement of Additional Information for a more detailed description.

See "Performance" in the Statement of Additional Information for a more detailed
discussion concerning the computation of the Fund's total return and yield.

This  Prospectus  does not constitute an offering or any  jurisdiction  in which
such offer is not  authorized  or in which the person  making  such offer is not
qualified to do so or to anyone to whom it is unlawful to make such offer.

No person is authorized to give any  information or to make any  representations
not contained in this Prospectus,  or in supplemental sales material  authorized
by the  Fund  and no  person  is  entitled  to  rely  upon  any  information  or
representation not contained herein or therein.

The  performance  of the Class A shares which is shown in the  comparison  below
will be  greater  than or less than that for Class B, Class C and Class P shares
based  on the  differences  in  sales  charges  and  fees  paid by  shareholders
investing in the different classes.

Comparison of change in value of a $10,000 investment,  assuming reinvestment of
all  dividends  and  distributions,  in Lord Abbett  Mid-Cap  Value Fund and the
unmanaged Russell Mid-Cap Index.


               The                   The            
               Fund at             Fund at             
               Net Asset      Maximum Offering  Russell Mid-Cap
Date            Value              Price            Index
12/31/86       $10000              $ 9423          $10000
12/31/87         9583                9028            9781
12/31/88        11079               10439           12188
12/31/89        13306               12538           14954
12/31/90        12688               11955           12549
12/31/91        16159               15227           17308
12/31/92        18335               17276           21061
12/31/93        20893               19687           24351
12/31/94        20211               19045           23832
12/31/95        25484               24013           32158
12/31/96        30894               29110           38372



        AVERAGE ANNUAL TOTAL RETURN 
        FOR CLASS A SHARES(3)
        1 Year  5 Years 10 Years
        14.30%  12.51%  11.28%

(1)Data  reflects the deduction of the maximum sales charge of 5.75%  applicable
to Class A shares.  

(2)Performance  numbers for the unmanaged  Russell  Mid-Cap Index do not reflect
transaction  costs or management fees. An investor cannot invest directly in the
Index.

(3)Total  return is the percent change in value,  after deduction of the maximum
sales  charge of 5.75%  applicable  to Class A shares,  with all  dividends  and
distributions  reinvested  for the periods shown ending  December 31, 1996 using
the SEC-required uniform method to compute such return.

<PAGE>
Investment Manager and Underwriter
Lord, Abbett & Co. and Lord Abbett Distributor LLC
The General Motors Building
767 Fifth Avenue
New York, New York 10153-0203
212-848-1800

Custodian 
The Bank of New York
48 Wall Street 
New York, New York 10286

Transfer Agent and Dividend 
Disbursing Agent
United Missouri Bank of Kansas City, N.A.
Tenth and Grand
Kansas City, Missouri 64141

Shareholder Servicing Agent
DST Systems, Inc.
P.O. Box 419100
Kansas City, Missouri 64141
800-821-5129

Auditors
Deloitte & Touche LLP

Counsel
Debevoise & Plimpton

Printed in the U.S.A.

LAMCVF-1-1097

(11/97)
LORD ABBETT
PROSPECTUS '97
MAY 1, 1997
                    APPLICATION INSIDE

AS SUPPLEMENTED NOVEMBER 10, 1997

Lord Abbett
Mid-Cap
Value Fund



<PAGE>

    SUPPLEMENT TO THE STATEMENT OF ADDITIONAL INFORMATION OF LORD ABBETT MID-
                    CAP VALUE FUND, INC. DATED MAY 1, 1997.


Pension  Class Rule 12b-1 Plan.  As  described in the  Prospectus,  the Fund has
adopted a Distribution Plan and Agreement  pursuant to Rule 12b-1 of the Act for
the Pension  Class (the  "Pension  Plan").  In adopting  the Pension Plan and in
approving its continuance,  the Board of Directors has concluded that there is a
reasonable  likelihood  that the  Pension  Plan will  benefit  the Class and its
shareholders.  The expected benefits include greater sales and lower redemptions
of Class  shares,  which should  allow the Class to maintain a  consistent  cash
flow, and a higher quality of service to shareholders by authorized institutions
than would  otherwise be the case.  The Pension Plan  requires the  directors to
review,  on a quarterly basis,  written reports of all amounts expended pursuant
to the Pension Plan and the purposes for which such  expenditures were made. The
Pension Plan shall continue in effect only if its  continuance  is  specifically
approved at least annually by vote of the directors, including a majority of the
directors who are not  interested  persons of the Fund and who have no direct or
indirect  financial  interest in the  operation  of the  Pension  Plan or in any
agreements related to the Pension Plan ("outside directors"),  cast in person at
a meeting  called  for the  purpose  of voting on the Plan.  The Plan may not be
amended to  increase  materially  above the limits set forth  therein the amount
spent for distribution expenses thereunder without approval by a majority of the
outstanding  voting  securities  of the  applicable  class and the approval of a
majority of the directors,  including a majority of the outside  directors.  The
Pension Plan may be  terminated at any time by vote of a majority of the outside
directors or by vote of a majority of its Class's outstanding voting securities.


SUPPLEMENT EFFECTIVE DATE: NOVEMBER 10, 1997





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