Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to the issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

INTERNATIONAL BUSINESS MACHINES CORPORATION

7 1/8% Debenture due 2096
CUSIP 459200 AP6

No.: R 1 $

INTERNATIONAL BUSINESS MACHINES CORPORATION, a corporation duly organized and existing under the laws of the State of New York (herein called the "Company", which term includes any successor corporation under the Indenture referred to on the reverse hereof), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the principal sum of 200,000,000 Dollars, at the office or agency of the Company in the Borough of Manhattan, The City and State of New York, on December 1, 2096, in such coin or currency of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts, and to pay interest, semi-annually on June 1 and December 1 of each year, on said principal sum at said office or agency, in like coin or currency, at the rate of 7 1/8% per annum, from the June 1 and the December 1, as the case may be, next preceding the date of this Debenture to which interest has been paid, unless the date hereof is a date to which interest has been paid, in which case from the date of this Debenture, or unless no interest has been paid on the Debentures (as defined on the reverse hereof), in which case from December 6, 1996, until payment of said principal sum has been made or duly provided for. Notwithstanding the foregoing, if the date hereof is after May 15 or November 15, as the case may be, and before the following June 1 or December 1, this Debenture shall bear interest from such June 1 or December 1; provided, however, that if the Company shall default in the payment of interest due on such June 1 or December 1, then this Debenture shall

bear interest from the next preceding June 1 or December 1 to which interest has been paid, or, if no interest has been paid on the Debentures, from December 6, 1996. The interest so payable on any June 1 or December 1 will, subject to certain exceptions provided in the Indenture referred to on the reverse hereof, be paid to the person in whose name this Debenture is registered at the close of business on such May 15 or November 15, as the case may be, next preceding such June 1 or December 1, unless the Company shall default in the payment of interest due on such interest payment date, in which case such defaulted interest, at the option of the Company, may be paid to the person in whose name this Debenture is registered at the close of business on a special record date for the payment of such defaulted interest established by notice to the registered holders of Debentures not less than ten days preceding such special record date or may be paid in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Debentures may be listed. Payment of interest may, at the option of the Company, be made by check mailed to the registered address of the person entitled thereto.

Reference is made to the further provisions of this Debenture set forth on the reverse hereof. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.

This Debenture shall not be valid or become obligatory for any purpose until the certificate of authentication

hereon shall have been signed by the Trustee under the Indenture referred to on the reverse hereof

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated:                              INTERNATIONAL BUSINESS MACHINES
                                    CORPORATION

                                        [SEAL]

TRUSTEE'S CERTIFICATE
OF AUTHENTICATION                   by
                                      ------------------------------
        This is one of the
Securities of the Series
designated herein issued
under the within-
mentioned Indenture.                by
                                      ------------------------------
THE CHASE MANHATTAN BANK, as Trustee


   by
       -----------------------------
       Authorized Signatory

This Debenture is one of a duly authorized issue of unsecured debentures, notes or other evidences of indebtedness of the Company (hereinafter called the "Securities"), of the series hereinafter specified, all issued or to be issued under an indenture dated as of October 1, 1993 (hereinafter called the "Indenture"), duly executed and delivered by the Company to The Chase Manhattan Bank, a New York banking corporation, as trustee (hereinafter called the "Trustee"), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the respective rights and duties thereunder of the Trustee, the Company and the holders of the Securities. The Securities may be issued in one or more series, which different series may be issued in various aggregate principal amounts, may mature at different times, may bear interest at different rates, may have different conversion prices (if any), may be subject to different redemption provisions, may be subject to different sinking, purchase or analogous funds, may be subject to different covenants and Events of Default and may otherwise vary as in the Indenture provided. This Debenture is one of a series

designated as the 7 1/8% Debentures due 2096 of the Company (hereinafter called the "Debentures") issued under the Indenture, limited in aggregate principal amount to $850,000,000.

In case an Event of Default with respect to the Debentures, as defined in the Indenture, shall have occurred and be continuing, the principal hereof together with interest accrued thereon, if any, may be declared, and upon such declaration shall become, due and payable, in the manner, with the effect and subject to the conditions provided in the Indenture.

The Indenture contains provisions permitting the Company and the Trustee, with the consent of the holders of not less than a majority in aggregate principal amount of the Securities at the time outstanding of all series to be affected (acting as one class) to execute supplemental indentures adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture or of any supplemental indenture or modifying in any manner the rights of the holders of the Securities of such series to be affected; provided, however, that no such supplemental indenture shall, among other things, (i) change the fixed maturity of the principal of, or any installment of principal of or interest on, any Security; (ii) reduce the principal amount thereof or the rate of interest thereon or any premium payable upon the redemption thereof; (iii) impair the right to institute suit for the enforcement of any such payment on or after the fixed maturity thereof (or, in the case of redemption, on or after the redemption date); (iv) reduce the percentage in principal amount of the outstanding Securities of any series, the consent of whose holders is required for any such supplemental indenture, or the consent of whose holders is required for any waiver (of compliance with certain provisions of the Indenture or certain defaults thereunder and their consequences) provided for in the Indenture; (v) change any obligation of the Company, with respect to outstanding Securities of a series, to maintain an office or agency in the places and for the purposes specified in the Indenture for such series; or (vi) modify any of the foregoing provisions or the provisions for the waiver of certain covenants and defaults, except to increase any applicable percentage of the aggregate principal amount of outstanding Securities the consent of the holders of which is required or to provide with respect to any particular series the right to condition the effectiveness of any supplemental indenture as to that

series on the consent of the holders of a specified percentage of the aggregate principal amount of outstanding Securities of such series or to provide that certain other provisions of the Indenture cannot be modified or waived without the consent of the holder of each outstanding Security affected thereby. It is also provided in the Indenture that the holders of a majority in aggregate principal amount of the Securities of a series at the time outstanding may on behalf of the holders of all the Securities of such series waive any past default under the Indenture with respect to such series and its consequences, except a default in the payment of the principal of, premium, if any, or interest, if any, on any Security of such series or in respect of a covenant or provision which cannot be modified without the consent of the Holder of each outstanding Security of the series affected. Any such consent or waiver by the holder of this Debenture shall be conclusive and binding upon such holder and upon all future holders and owners of this Debenture and any Debentures which may be issued in exchange or substitution herefor, irrespective of whether or not any notation thereof is made upon this Debenture or such other Debentures.

No reference herein to the Indenture and no provision of this Debenture or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of, if any, and interest on this Debenture at the place, at the respective times, at the rate and in the coin or currency herein prescribed.

The Indenture permits the Company to Discharge its obligations with respect to the Debentures on the 91st day following the satisfaction of the conditions set forth in the Indenture, which include the deposit with the Trustee of money or U.S. Government Obligations or a combination thereof sufficient to pay and discharge each installment of principal of (including premium, if any, on) and interest, if any, on the outstanding Debentures.

If the Company shall, in accordance with Section 901 of the Indenture, consolidate with or merge into any other corporation or convey or transfer its properties and assets substantially as an entirety to any Person, the successor shall succeed to, and be substituted for, the Person named as the "Company" on the face of this Debenture, all on the terms set forth in the Indenture.

The Debentures are issuable in registered form without coupons in denominations of $1,000 and any integral multiple of $1,000. In the manner and subject to the limitations provided in the Indenture, but without the payment of any service charge, Debentures may be exchanged for an equal aggregate principal amount of Debentures of other authorized denominations at the office or agency of the Company maintained for such purpose in the Borough of Manhattan, The City and State of New York.

The Debentures may be redeemed as a whole or in part, at the option of the Company at any time, upon mailing a notice of such redemption not less than 30 nor more than 60 days prior to the date fixed for redemption to the holders of the Debentures at their last registered addresses, all as provided in the Indenture, at a redemption price equal to the greater of (i) 100% of the principal amount of the Debentures to be redeemed and (ii) the sum of the present values of the Remaining Scheduled Payments thereon discounted to the redemption date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 15 basis points, plus in either case accrued interest on the principal amount being redeemed to the date of redemption.

"Treasury Rate" means, with respect to any redemption date, the rate per annum equal to the semiannual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such redemption date.

"Comparable Treasury Issue" means the United States Treasury security selected by an Independent Investment Banker as having a maturity comparable to the remaining term of the Debentures to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Debentures. "Independent Investment Banker" means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

"Comparable Treasury Price" means with respect to any redemption date, (i) the average of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) on the third business day preceding such redemption date, as set forth in the

daily statistical release (or any successor release) published by the Federal Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations for U.S. Government Securities" or (ii) if such release (or any successor release) is not published or does not contain such prices on such business day, (A) the average of the Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (B) if the Trustee obtains fewer than four such Reference Treasury Deal Quotations, the average of all such Quotations. "Reference Treasury Dealer Quotations" means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expected in each case as a percentage of its principal amount) quoted in writing to the Trustee by such Reference Treasury Dealer at 5:00
p.m. on the third business day preceding such redemption date.

"Reference Treasury Dealer" means each of Salomon Brothers Inc, Chase Securities Inc., CS First Boston Corporation, Merrill Lynch, Pierce, Fenner & Smith Incorporated, Morgan Stanley & Co. Incorporated and their respective successors; provided, however, that if any of the foregoing shall cease to be a primary U.S. Government securities dealer in New York City (a "Primary Treasury Dealer"), the Company shall substitute therefor another Primary Treasury Dealer.

"Remaining Scheduled Payments" means, with respect to any Debenture, the remaining scheduled payments of the principal thereof to be redeemed and interest thereon that would be due after the related redemption dated but for such redemption; provided, however, that, if such redemption date is not an interest payment date with respect to such Debenture, the amount of the next succeeding scheduled interest payment thereon will be reduced by the amount of interest accrued thereon to such redemption date.

Upon occurrence of a Tax Event, the Company shall have the right to shorten the maturity of the Debentures to the extent required, in the opinion of a nationally recognized independent tax counsel, such that, after the shortening of the maturity, interest paid on the Debentures will be deductible for Federal income tax purposes.

In the event that the Company elects to exercise its right to shorten the maturity of the Debentures on the

occurrence of a Tax Event, the Company will mail a notice of shortened maturity to each holder of record of the Debentures by first-class mail not more than 60 days after the occurrence of such Tax Event, stating the new maturity date of the Debentures. Such notice shall be effective immediately upon mailing.

"Tax Event" means that the Company shall have received an opinion of a nationally recognized independent tax counsel to the effect that on or after the date of the issuance of the Debentures, as a result of
(a) any amendment to, clarification of, or change (including any announced prospective change) in laws, or any regulations thereunder, of the United States, (b) any judicial decision, official administrative pronouncement, ruling, regulatory procedure, notice or announcement, including any notice or announcement of intent to adopt such procedures or regulations (an "Administrative Action"), or (c) any amendment to, clarification of, or change in the official position or the interpretation of such Administrative Action or judicial decision that differs from the theretofore generally accepted position, in each case, on or after, the date of the issuance of the Debentures, such change in tax law creates a more than insubstantial risk that interest paid by the Company on the Debentures is not, or will not be, deductible, in whole or in part, by the Company for purposes of United States Federal income tax.

Upon due presentation for registration of transfer of this Debenture at the office or agency of the Company for such registration in the Borough of Manhattan, The City and State of New York, a new Debenture or Debentures of authorized denominations for an equal aggregate principal amount will be issued to the transferee in exchange herefor, subject to the limitations provided in the Indenture, without charge except for any tax or other governmental charge imposed in connection therewith.

Prior to due presentment for registration of transfer of this Debenture, the Company, the Trustee and any agent of the Company or the Trustee may deem and treat the registered holder hereof as the absolute owner of this Debenture (whether or not this Debenture shall be overdue) for the purpose of receiving payment of the principal of, premium, if any, and interest on this Debenture, as herein provided, and for all other purposes, and neither the Company nor the Trustee nor any agent of the Company or the Trustee shall be affected by any notice of the contrary. All payments made

to or upon the order of such registered holder shall, to the extent of the sum or sums paid, effectually satisfy and discharge liability for moneys payable on this Debenture.

No recourse for the payment of the principal of, premium, if any, or interest on this Debenture, or for any claim based hereon or otherwise in respect hereof, and no recourse under or upon any obligation, covenant or agreement of the Company in the Indenture or any indenture supplemental thereto or in any Debenture, or because of the creation of any indebtedness represented thereby, shall be had against any incorporator, stockholder, officer or director, as such, past, present or future, of the Company or of any successor corporation, either directly or through the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.

Unless otherwise defined in this Debenture, all terms used in this Debenture which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

THIS DEBENTURE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE

WITH THE LAWS OF THE STATE OF NEW YORK.