# Document

**Effective:** 5/31/79  
**Issued to:** International Business Machines Corp.

**By:** Centennial Insurance Company

**(The information provided above is required to be completed only when this endorsement is issued for attachment to the policy subsequent to its issue.)**

**Amendment of Condition @ Maintenance of Underlying Insurance**

In consideration of the premium charged, it is agreed that Condition @ Maintenance of Underlying Insurance is amended to read as follows:

It is a condition of this insurance that the underlying policy(ies) listed in Schedule A, or renewals or replacements thereof not more restricted, shall be maintained in force as collectible insurance during the currency of this policy, except for any reduction of the aggregate limit(s) contained therein solely by reason of losses in respect of occurrences happening during this policy period. In the event of failure by the insured so to maintain such policy(ies) or to meet all conditions subsequent to loss under such policy(ies), the insurance afforded by this policy shall apply in the same manner it would have applied had such policy(ies) been so maintained in force.

**JVM:sh**  
**4/4/80**

All other terms and conditions of this insurance remain unchanged.

**John J. Kudelka**  
**President**  
**Authorized Representative**