1981 20¢ "C" Eagle Mint Single

United States #1947 20¢ "C" Eagle Coil Mint Single

United States #1948 20¢ "C" Eagle from Pane Mint Single

United States #1948A (20¢) "C" Eagle Mint Booklet Pane of 10 stamps

United States #1943 20¢ Agave Mint Single

United States #1942 20¢ Barrel Cactus Mint Single

United States #1936 20¢ James Hoban Mint Single

United States #1908 20¢ Fire Pumper Mint Single

United States #1940 20¢ Christmas Toy Mint Single

United States #1941 20¢ John Hanson Mint Single