Captain America USPS postage stamp
This is a Marvel Comic postage stamp that celebrates the superhero known as Captain America. It is one of 20 stamps in the Marvel Comic Book and Cachet Set of postage stamps. The iconic Sentinel of Liberty (or Captain America) stamp was issued by U.S. Postal Service (USPS) in 2007. Other top postage stamp issuers around the world have issued a comic book stamp collection. Among the best of them are the British, Australian, French and Canadian postal authorities.