This listing is for federal duck stamps 22 and 23, both used. The stamps have a denomination of $2 and were issued in the United States in 1956-57. The design features ducks and the color is blue. The cancellation type is pen cancel and the stamps are ungraded. Certification is uncertified. The state of the stamps is unknown. This item falls under the categories of Duck Stamps, Back of Book, United States, and Stamps.