A plate block is four, or more, stamps from the edge of a sheet that shows the plate or cylinder number that was used to print the stamps. Plate numbers have appeared on U.S. stamp sheets since the 19th century. The layout and size of the plate block typically depends on the printing method used for those stamps.
US Stamps
2507 records.
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1997 32c Stagecoach and Ship US #3130-31

1997 32c Stagecoach and Ship

$5.50
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1969 6c Apollo 8 Moon Orbit US #1371

1969 6c Apollo 8 Moon Orbit

$2.50
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2022 First-Class Forever Stamps - Title IX US #5668-71

2022 First-Class Forever Stamps - Title IX

$6.50
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1948 3c Four Chaplains US #956

1948 3c Four Chaplains

$2.50
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2022 First-Class Forever Stamp - Shel Silverstein US #5683

2022 First-Class Forever Stamp - Shel Silverstein

$5.95
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1969 10c Moon Landing US #C76

1969 10c Moon Landing

$3.25
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2022 Two-Ounce Forever Stamp - Distingushed Americans Series: Katharine Graham US #5699

2022 Two-Ounce Forever Stamp - Distingushed Americans Series: Katharine Graham

$7.75
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1938 3c Landing of the Swedes and Finns US #836

1938 3c Landing of the Swedes and Finns

$6.95
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1945 3c US Armed Forces: Iwo Jima US #929

1945 3c US Armed Forces: Iwo Jima

$2.50
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1945 3c Roosevelt and White House US #932

1945 3c Roosevelt and White House

$2.00
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1948 5c Swedish Pioneer Centennial US #958

1948 5c Swedish Pioneer Centennial

$2.00
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1954 Liberty Series - 8¢ Statue of Liberty, Flat Plate US #1041

1954 Liberty Series - 8¢ Statue of Liberty, Flat Plate

$3.50
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2022 Two-Ounce Forever Stamp - Wedding Series: Sunflower Bouquet US #5682

2022 Two-Ounce Forever Stamp - Wedding Series: Sunflower Bouquet

$7.75
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2022 First-Class Forever Stamp - Kwanzaa US #5737

2022 First-Class Forever Stamp - Kwanzaa

$5.75
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2022 First-Class Forever Stamp - Women Cryptologists of World War II US #5738

2022 First-Class Forever Stamp - Women Cryptologists of World War II

$5.95
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2022 First-Class Forever Stamp - Hanukkah US #5739

2022 First-Class Forever Stamp - Hanukkah

$5.75
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1963 8c Amelia Earhart US #C68

1963 8c Amelia Earhart

$3.00
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1937 2c Army and Navy: Decatur and MacDonough US #791

1937 2c Army and Navy: Decatur and MacDonough

$2.25
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1944 3c Corregidor, Manila Bay US #925

1944 3c Corregidor, Manila Bay

$2.75
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1945 1c Roosevelt and Hyde Park US #930

1945 1c Roosevelt and Hyde Park

$1.25
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1945 3c US Armed Forces: Coast Guard US #936

1945 3c US Armed Forces: Coast Guard

$2.00
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1947 3c Thomas A. Edison US #945

1947 3c Thomas A. Edison

$2.50
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1947 3c U.S. Frigate Constitution US #951

1947 3c U.S. Frigate Constitution

$2.25
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1948 3c California Gold Rush Centennial US #954

1948 3c California Gold Rush Centennial

$2.75
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