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1966
1966 Albert Einstein 8c — $4.95
1966 Albert Einstein 8¢ Princeton, NJ First Day Cover
1966 Albert Einstein 8¢ Princeton, NJ First Day Cover — $4.95
1966 American Circus 5¢ Delavan, WI First Day Cover
1966 American Circus 5¢ Delavan, WI First Day Cover — $4.95
1966 American Circus 5¢ Delavan, WI First Day Cover
1966 American Circus 5¢ Delavan, WI First Day Cover — $4.95
1966 American Circus 5¢ Delavan, WI First Day Cover
1966 American Circus 5¢ Delavan, WI First Day Cover — $4.95
1966 Año de Cooperación Internacional – Uruguay First Day Cover | Peace and Progress — $7.95
1966 Beautification of America 5¢ Washington, DC First Day Cover
1966 Beautification of America 5¢ Washington, DC First Day Cover — $4.95
1966 Beautify America 5¢ Washington, DC First Day Cover
1966 Beautify America 5¢ Washington, DC First Day Cover — $4.95
1966 Bill of Rights 5¢ Miami Beach, FL First Day Cover
1966 Bill of Rights 5¢ Miami Beach, FL First Day Cover — $4.95
1966 Bill of Rights 5¢ Miami Beach, FL First Day Cover
1966 Bill of Rights 5¢ Miami Beach, FL First Day Cover — $4.95
1966 Christmas 5¢ Christmas, MI First Day Cover
1966 Christmas 5¢ Christmas, MI First Day Cover — $4.95
1966 Frank Lloyd Wright 2¢ Spring Green, WI First Day Cover
1966 Frank Lloyd Wright 2¢ Spring Green, WI First Day Cover — $4.95
1966 Franklin D. Roosevelt 6¢ Hyde Park, NY First Day Cover
1966 Franklin D. Roosevelt 6¢ Hyde Park, NY First Day Cover — $4.95
1966 General Federation of Women's Clubs 5¢ New York, NY First Day Cover
1966 General Federation of Women's Clubs 5¢ New York, NY First Day Cover — $4.95
1966 General Federation of Women's Clubs 5¢ New York, NY First Day Cover
1966 General Federation of Women's Clubs 5¢ New York, NY First Day Cover — $4.95
1966 George Washington 5¢ Cincinnati, OH First Day Cover
1966 George Washington 5¢ Cincinnati, OH First Day Cover — $4.95
1966 George Washington 5¢ Cincinnati, OH First Day Cover
1966 George Washington 5¢ Cincinnati, OH First Day Cover — $4.95
1966 George Washington 5¢ Washington, DC First Day Cover
1966 George Washington 5¢ Washington, DC First Day Cover — $4.95
1966 George Washington 5¢ Washington, DC First Day Cover
1966 George Washington 5¢ Washington, DC First Day Cover — $4.95
1966 Great River Road 5¢ Baton Rouge, LA First Day Cover
1966 Great River Road 5¢ Baton Rouge, LA First Day Cover — $4.95
1966 Humane Treatment of Animals 5¢ New York, NY First Day Cover
1966 Humane Treatment of Animals 5¢ New York, NY First Day Cover — $4.95
1966 Indiana Statehood Sesquicentennial 5¢ Corydon, IN First Day Cover
1966 Indiana Statehood Sesquicentennial 5¢ Corydon, IN First Day Cover — $4.95
1966 Johnny Appleseed 5¢ Leominster, MA First Day Cover
1966 Johnny Appleseed 5¢ Leominster, MA First Day Cover — $4.95
1966 Johnny Appleseed 5¢ Leominster, MA First Day Cover
1966 Johnny Appleseed 5¢ Leominster, MA First Day Cover — $4.95
1966 Marine Corps Reserve 5¢ Washington, DC First Day Cover
1966 Marine Corps Reserve 5¢ Washington, DC First Day Cover — $4.95

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1966 Mexico - Año de la Amistad Mexico Cento Americana .80 — $4.95

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1966 Mexico - Año Internacional del Arroz .40 — $4.95

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1966 Mexico - Cincuentenario de la Fundacion de la Escuela Superior de Ingenieria, Mecanica y Electrica .20 — $4.95

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1966 Mexico - Felix Ruben Garcia y Sarmiento 1.20 Ruben Dario — $4.95

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1966 Mexico - Fray Bartolomè del las Casas .20 — $4.95

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1966 Mexico - Visita Del Secretario General O.N.U .80 U Thant — $4.95

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1966 Mexico - XX Aniversario de la Unesco .80 — $4.95
1966 Migratory Bird Treaty 5¢ Pittsburgh, PA First Day Cover
1966 Migratory Bird Treaty 5¢ Pittsburgh, PA First Day Cover — $4.95
1966 National Park Service 5¢ Yellowstone National Park, WY First Day Cover
1966 National Park Service 5¢ Yellowstone National Park, WY First Day Cover — $4.95
1966 Poland's Millennium 5¢ Washington, DC First Day Cover
1966 Poland's Millennium 5¢ Washington, DC First Day Cover — $4.95
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover — $4.95
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover — $4.95
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover — $4.95
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover
1966 Sixth International Philatelic Exhibition 5¢ Washington, DC First Day Cover — $4.95
1966 United States Savings Bonds 5¢ Sioux City, IA First Day Cover
1966 United States Savings Bonds 5¢ Sioux City, IA First Day Cover — $4.95
1966 United States Savings Bonds 5¢ Sioux City, IA First Day Cover
1966 United States Savings Bonds 5¢ Sioux City, IA First Day Cover — $4.95
1966 United States Savings Bonds 5¢ Sioux City, IA First Day Cover
1966 United States Savings Bonds 5¢ Sioux City, IA First Day Cover — $4.95