| Issuer: United Nations
Date: 9/25/1981 (1981 blocks) (4, 2 x 2) 1, 1: 20c d=flag of the United States (1981) 1, 2: 20c d=flag of Singapore 2, 1: 20c d=flag of Panama (1981) 2, 2: 20c d=flag of Costa Rica |
External links: Colnect 717965..s-UNO_New_York |
