**Document Title:**

This document appears to be an insurance endorsement form, specifically related to International Business Machines Corporation (IBM). The form includes details such as the policy number, effective and expiration dates, agency information, and the named insured.

**Details:**

- **Policy No.:** 8906923
- **Effective Date of Policy:** 5-21-79
- **Effective Date of End:** 10-29-79
- **Agency No.:** 50-515-810
- **Named Insured:** INTERNATIONAL BUSINESS MACHINES CORP.
- **Additional Information:**
  - The endorsement is issued by the company named below, which is the insurer under the policy designated above.
  - The endorsement forms part of the policy as of the effective date hereof.
  - It is agreed that the joint venture coverage is restricted to IBM interests only.
  - The endorsement is dated November 21, 1979.

**Signatures:**

The document includes signatures from Zurich Insurance Company and American Guarantee and Liability Insurance Company, indicating their approval or countersignature.

**Footer:**

- **MM 009586**: This likely refers to a document or file number.

**Note:**

The document seems to be a formal agreement or endorsement related to insurance coverage for IBM, with specific restrictions on the scope of the coverage.