Covers tagged "multicolor cachet" (clear filter)

Broad-billed Hummingbird First Day Cover, June 15, 1992
Broad-billed Hummingbird First Day Cover, June 15, 1992
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 89
20th Universal Postal Congress & World Stamp Expo 89