U.S. Mint Stamps by Year

United States #1903 9.3¢ Mail Wagon Mint Single

United States #1894 20¢ Flag & Supreme Court Mint Single

United States #2011 20¢ Aging Together Mint Single

United States #1954 20¢ Alaska Mint Single

United States #2019-22 20¢ American Architecture Mint Se-tenant Block of 4

United States #1955 20¢ Arizona Mint Single

United States #1956 20¢ Arkansas Mint Single

United States #2012 20¢ Barrymores Mint Single

United States #2008 20¢ Breeder Reactor Mint Single

United States #1957 20¢ California Mint Single

United States #2026 20¢ Christmas - Madonna & Child Christmas Mint Single

United States #1959 20¢ Connecticut Mint Single