Covers tagged "world stamp expo" (clear filter)

20th UPU Congress & World Stamp Expo '89 - Washington, DC
20th UPU Congress & World Stamp Expo '89 - Washington, DC
20th Universal Postal Congress & World Stamp Expo 1989
20th Universal Postal Congress & World Stamp Expo 1989
20th Universal Postal Congress & World Stamp Expo 89
20th Universal Postal Congress & World Stamp Expo 89
20th Universal Postal Congress Steamboat Cover with RKA Cachet
20th Universal Postal Congress Steamboat Cover with RKA Cac…