Coin sample 1764 (portrait of a young Catherine II). Were produced from 1764 to 1776. In a circle the front and back of a rim with notches (on some coins may partially be absent, it is not a marriage).On the obverse
is a portrait of Catherine II in profile, face to the right. Under the portrait letters "СПБ"(Saint-Petersburg). In a circle the inscription - "Б•М•ЕКАТЕРИНА•II•IМП•IСАМОД•ВСЕРОС"(stands for "the grace of God Catherine II Empress and autocrat of all Russias").The reverse
depicts a simplified coat of arms of the Russian Empire
of second half XVIII century: the double-headed eagle with the lifted wings, crowned by two Imperial crowns, above the same crown but larger. Right Talon the eagle holds a scepter, the left power. On the eagle's breast shield with an indication of the par value - the number "20". Below in a semicircle is a ribbon with the year of issue "1793". On the sides and at the top there are 20 raised dots (the number indicates the nominal).
Varieties of the 20 cents of the sample of 1764:Portrait with scarf on the neck:
1764 (MMD TI);
1764-1766 (MMD, without the initials of mintmaster);
1765 (SPB TI);Portrait without a scarf on neck:
1766-1776 (SPB TI);
1767-1770, 1775 (MMD, without the initials of mintmaster).