<PAGE>
SCHEDULE 13 G
DAVIS SELECTED ADVISERS, L.P.
UNDER THE SECURITIES EXCHANGE ACT OF 1934
AMENDED 11 MARCH 1998
Item 1(a) NAME OF ISSUER
Berkley (W.R.) Corp.
Item 1(b) ADDRESS OF ISSUERS PRINCIPAL EXECUTIVE OFFICES
Berkley (W.R. ) Corp.
165 Mason Street
Greenwich, CT 06836
Item 2(a) NAME OF PERSON FILING
DAVIS SELECTED ADVISERS, L.P. FOR
Baltimore Gas & Electric Pension Plan
Central & SW Systems Pension Plan
Davis New York Venture Fund
Davis Financial Fund
McKeesport Healthcare
Mt. Sinai Healthcare Foundation
Mt. Sinai Operating Account
SunAmerica Series Trust Venture Value Polaris Annuity
SICAV Davis Financial Fund
SICAV Davis Value Fund
SunAmerica Style Select Venture Value Fund
SunAmerica Style Select Large Cap Value Fund
Temple, Texas Firemen's Pension Fund
Via Metropolitan Transit Retirement Plan
New England Zenith Annuity
Item 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE
P.O. Box 1688
124 East Marcy Street
Santa Fe, NM 87501
Item 2(c) CITIZENSHIP
Colorado Limited Partnership
Item 2(d) TITLE OF CLASS OF SECURITIES
Common
Item 2(e) CUSIP NUMBER
84423102
Item 3 FIELD PURSUANT TO RULE 13d-1(b)
(e) [X] Investment Adviser registered under Section 203 of the
Investment Advisers Act of 1940
<PAGE>
SCHEDULE 13 G
DAVIS SELECTED ADVISERS, L.P.
UNDER THE SECURITIES EXCHANGE ACT OF 1934
AMENDED 11 MARCH 1998
ITEM 4 OWNERSHIP
<TABLE>
<CAPTION>
<S> <C>
(A) AMOUNT BENEFICIALLY OWNED 1,505,800 shares
Baltimore Gas & Electric Pension Plan 9,600
Central & SW Systems Pension Plan 12,100
Davis New York Venture Fund 1,155,000
Davis Financial Fund 48,000
McKeesport Healthcare 3,050
Mt. Sinai Healthcare Foundation 1,950
Mt. Sinai Operating Account 800
SunAmerica Series Trust Venture Value Polaris Annuity 201,600
SICAV Davis Financial Fund 800
SICAV Davis Value Fund 18,900
SunAmerica Style Select Venture Value Fund 8,550
SunAmerica Style Select Large Cap Value Fund 1,500
Temple, Texas Firemen's Pension Fund 550
Via Metropolitan Transit Retirement Plan 2,700
New England Zenith Annuity 40,700
(B) PERCENT OF CLASS 5.09%
Baltimore Gas & Electric Pension Plan 0.03%
Central & SW Systems Pension Plan 0.04%
Davis New York Venture Fund 3.90%
Davis Financial Fund 0.16%
McKeesport Healthcare 0.01%
Mt. Sinai Healthcare Foundation 0.01%
Mt. Sinai Operating Account 0.00%
SunAmerica Series Trust Venture Value Polaris Annuity 0.68%
SICAV Davis Financial Fund 0.00%
SICAV Davis Value Fund 0.06%
SunAmerica Style Select Venture Value Fund 0.03%
SunAmerica Style Select Large Cap Value Fund 0.01%
Temple, Texas Firemen's Pension Fund 0.00%
Via Metropolitan Transit Retirement Plan 0.01%
New England Zenith Annuity 0.14%
</TABLE>
<PAGE>
SCHEDULE 13 G
DAVIS SELECTED ADVISERS, L.P.
UNDER THE SECURITIES EXCHANGE ACT OF 1934
AMENDED 11 MARCH 1998
<TABLE>
<CAPTION>
<S> <C>
(C) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:
(I) SOLE POWER TO VOTE OR TO DIRECT THE VOTE
Davis Selected Advisers,L.P. 1,505,800
(II) SHARED POWER TO VOTE TO DIRECT THE VOTE
N/A
(III) SOLE POWER TO DISPOSE OR TO DIRECT THE DISPOSITION OF
Davis Selected Advisers, L.P. 1,505,800
(IV) SHARED POWER TO DISPOSE OR TO DIRECT THE DISPOSITION OF
N/A
</TABLE>
ITEM 5 NOT APPLICABLE
ITEM 6 NOT APPLICABLE
ITEM 7 NOT APPLICABLE
ITEM 8 NOT APPLICABLE
ITEM 9 NOT APPLICABLE
ITEM 10 CERTIFICATION
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the
ordinary course business and were not acquired for the purpose of
and do not have the effect of changing or influencing the control of
the issuer or such securities and were not acquired in connection
with or as a participant in any transaction having such purposes or
effect.
After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true,
complete and correct.
SIGNATURE /s/ Heather Ruch
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PRINT Heather Ruch, Compliance Officer
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DATE 11 MARCH 98
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