The coin is minted from silver, was produced from 1826 to 1831. The obverse and reverse sides have a protruding on the circumference of the piping. Partial or complete absence of Kant is not a marriage and is determined by the technology of minting.The obverse of the coin
depicts the so-called "Masonic emblem" just a little different from the State Emblem of the Russian Empire
of the sample of 1825. The coat of arms double-headed eagle without crowns with splayed wings, located above the Imperial crown. In paws the eagle holds the Imperial regalia, among which the thunderbolts and a wreath of Laurel leaves. Under the eagle is located the winding tape of the order of Andrew's, stretched for the entire width of the coat of arms. On the breast a large diamond-shaped shield with the Moscow coat of arms: St. George on horseback slaying a serpentine dragon with wings. Under the tail the initials of mintmaster - letters "Н"and "Г" below in a semicircle along the edge to indicate the date of issue "1828 ГОДА"The reverse of the coin
of large denomination is specified in two lines - "20 КОПЕЕКЪ" At the top is the Imperial crown. Under the denomination of solid horizontal line. Below the letters "С.П.Б."(Saint-Petersburg). The sides along the rim are two branches (oak and Laurel) that are associated at the bottom with tape.
Varieties of coins of 20 cents of the sample of 1826:
1826-1829 (SPB NG);
1830 (SPB NG eagle tail);
1830 (SPB NG eagle without tail);
1831 (SPB NG, head number "2" is closed);
1831 (SPB NG, head number "2" is open).