U.S. Mint Stamps by Year

United States #1977 20¢ Missouri Mint Single

United States #1978 20¢ Montana Mint Single

United States #1979 20¢ Nebraska Mint Single

United States #1980 20¢ Nevada Mint Single

United States #1981 20¢ New Hampshire Mint Single

United States #1982 20¢ New Jersey Mint Single

United States #1983 20¢ New Mexico Mint Single

United States #1984 20¢ New York Mint Single

United States #1985 20¢ North Carolina Mint Single

United States #1986 20¢ North Dakota Mint Single

United States #1987 20¢ Ohio Mint Single

United States #1988 20¢ Oklahoma Mint Single