A 5-cent stamp commemorating the United Nations International Cooperation Year was issued June 26, 1965. Issued in San Francisco, at the site of the first meeting of the United Nations, U.S. #1266 marked the 20th anniversary of the United Nations and the International Cooperation Year. The design is similar to the symbol of the International Cooperation Year, featuring shaking hands and the U.N. wreath.
Here is an unaddressed FIRST DAY COVER with a single INTERNATIONAL COOPERATION YEAR 5 Cent stamp with San Francisco, CA postmark on day of issue. It is offered for sale at only $3.
* Discounts available on 10 or more First Day Covers.