Stamp Finder ↺ Scott or Y & T ? 25th General Assembly of the Organization of American States 1995 Regular Stamps (July 25, 1995) Sc 859 / YT 855 Sc 860 / YT 856 Sc 861 / YT 857 Sc 862 / YT 858 Sc 863 / YT 859 Sc 864 / YT 860 Souvenir Sheet (July 25, 1995) Sc 865 / YT BF52