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Your search found 2,576 result(s).
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1c Franklin plate proof- Date
- August 8, 1894
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25c Special Handling plate proof
- Date
- April 7, 1925
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2c Farming in the West plate proof
- Date
- October 6, 1898
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1c Franklin plate proof
- Date
- January 7, 1924
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10c Washington plate proof
- Date
- December 29, 1908
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4c Abraham Lincoln plate proof
- Date
- May 26, 1897
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15c Canal Zone Jackson Smith plate proof
- Date
- October 27, 1931
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4c Water Conservation plate proof
- Date
- February 24, 1960
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3c New York World's Fair plate proof
- Date
- February 12, 1939
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3c Third International Philatelic Exhibition plate proof
- Date
- April 28, 1936
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2c Washington plate proof
- Date
- July 3, 1894
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8c Canal Locks at Sault Ste. Marie frame plate proof sheet
- Date
- May 1, 1901
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1 1/4c Palace of the Governors, Santa Fe plate proof
- Date
- June 6, 1960
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3c Byrd Antarctic plate proof
- Date
- September 27, 1933
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½c Nathan Hale plate proof
- Date
- March 23, 1925
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Topic
- National Stamp Collection 51
- Military & Policing Forces 30
- The Environment 14
- Architecture 13
- Health & Medicine 10
- U.S. Related Areas 7
- Holidays & Celebrations 6
- Art & Photography 5
- Education 5
- Technology & Inventions 5
- Food & Agriculture 4
- Sports 4
- The Gilded Age (1877-1920) 4
- Space Exploration & the Universe 3
- Animals 2
- Cold War, 1945-1989 2
- Great Depression 2
- Humanitarian Causes 2
- Covers & Letters 1
- Postal Stationery 1
- Science 1
- Stars of Stage & Screen 1
- The Roaring Twenties (1920-1929) 1
- U.S. Stamps 1
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