USA - 1947: An 10 cents black Air Post stamp depicting Pan American Union Building, Washington, DC. For prepayment of postage on all mailable matter sent by airmail. The Pan American Union Building is the headquarters for the Organization of American States. It is located at 17th Street between C Street and Constitution Avenue, Northwest, Washington,

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USA Air Post stamp. This postage stamp, as a physical objects, is part of a private collection owned by the author of the image

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Size: 5300px × 3400px
Location: United States of America
Photo credit: © World of Stamp / Alamy / Afripics
License: Royalty Free
Model Released: No

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