In 1997, Bugs appeared on a U.S. postage stamp, the first cartoon to be so honored, beating the iconic Mickey Mouse. The stamp is number seven on the list of the ten most popular U.S. stamps, as calculated by the number of stamps purchased but not used. The introduction of Bugs onto a stamp was controversial at the time, as it was seen as a step toward the 'commercialization' of stamp art. The postal service rejected many designs and went with a postal-themed drawing. Avery Dennison printed the Bugs Bunny stamp sheet, which featured "a special ten-stamp design and was the first self-adhesive souvenir sheet issued by the U.S. Postal Service."