# THE CHUBB COMMERCIAL EXCESS

## Endorsement

**Policy Period:** MAY 21, 1997 to MAY 21, 1998  
**Effective Date:** May 21, 1997  
**Policy Number:** (98) 7908-98-97 CAS  
**Insured:** INTERNATIONAL BUSINESS MACHINES CORP., ETAL (AS PER CONTROLLING U/L INSURANCE)  
**Name of Company:** VIGILANT INSURANCE COMPANY  
**Date Issued:** June 12, 1997  

## Endorsement Underlying Insurance Endorsement

**THIS POLICY IS SUBJECT TO THE FOLLOWING ENDORSEMENT**

It is agreed that on the Declarations, "Item 6b.", "Other Underlying Insurance" is completed to read as follows:

### Underlying Insurance (Item 6)

#### 6b. Other Underlying Insurance

- **Company:** ROYAL INS. CO.
- **Policy Number:** RHA009199
- **Policy Period:** From: MAY 21, 1997 To: MAY 21, 1998
- **Limits of Insurance:**
  - Each Occurrence: $5,000,000.
  - Aggregate (where applicable): $5,000,000.

#### 6b. Other Underlying Insurance

- **Company:** TWIN CITY INS. CO.
- **Policy Number:** KA000484
- **Policy Period:** From: MAY 21, 1997 To: MAY 21, 1998
- **Limits of Insurance:**
  - Each Occurrence: $10,000,000.
  - Aggregate (where applicable): $10,000,000.

**Occurrence**

**Underlying Insurance Endorsement**

Form 07-02-0923 (Ed. 9/92) Endorsement  
Page 1 of 4