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Smithsonian sunburst Smithsonian National Postal Museum
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    Open daily 10 a.m. to 5:30 p.m.

    Admission is always free!

    2 Massachusetts Ave., N.E.
    Washington, DC 20002

    The museum's main entrance is located on the corner of First Street and Massachusetts Avenue NE. Other entrances have variable hours.

    street map of Postal museum

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William H. Gross Stamp Gallery
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  • 1918: The Inverted Jenny
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1918: The Inverted Jenny

Refer to caption
24c Curtiss Jenny inverted block of four, 1918.
Loan from William H. Gross.

This upside-down blue plane within a red frame is the most famous U.S. stamp and one of the world’s most famous printing errors. Only one misprinted sheet of 100 stamps was sold.

Inverted Jenny Topical Reference Page »

William H. Gross Stamp Gallery

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Inverted Jenny
‹ 1847: America’s First Stamps up 1851: Hawaiian Missionaries ›

HomeSmithsonian National Postal Museum

Visit »

Open daily 10 a.m. to 5:30 p.m.

Admission is always free!

2 Massachusetts Ave., N.E.
Washington, DC 20002

The museum's main entrance is located on the corner of First Street and Massachusetts Avenue NE. Other entrances have variable hours.

street map of Postal museum

Learn more
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Owney, the Railway Mail Service Mascot

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