1981 18¢ "Waves of Grain" Mint Single

United States #1890 18¢ "Waves of Grain" Plate Block of 20

United States #1907 18¢ Surrey Mint Single

United States #1937 18¢ Yorktown Mint Single

United States #1927 18¢ Alcoholism Mint Single

United States #1918 18¢ Landing Mint Single

United States #1938 18¢ Virginia Capes Mint Single

United States #1919 18¢ Comprehending the Universe Mint Single

United States #1917 18¢ Shuttle and Rockets Mint Single

United States #1891 18¢ "Shipping Sea" Mint Single