The coin is gray, made of an alloy of copper and Nickel (in some catalogues mistakenly listed Nickel). The obverse and reverse of the coins have a raised rim around the circumference. GURT ribbed, consists of a plurality of notches.
On the obverse the large coat of arms Soviet Union 1946 with 16 bands of tape on the ears of wheat (the number of Union republics). The lower belt connects the bundles of stalks together and represents the RSFSR, the rest is distributed on each side (8 left and 7 right). The coat of arms is simplified and has no text on the ribbon. Under the arms along the rim there is an inscription "СССР"(the extreme letters are above average).
In the center of the reverse there is a shield in the form of a square with bevelled corners. Inside the shield is specified denomination in two lines - "20 КОП"(the numbers are much larger letters). Outside under the shield horizontally indicated the year of coinage - "1956" (the lower part of the letters follows the curve of Kant). Top left to right shows a stalk of wheat below the shield. Left and right are oak branches (3 leaves and 1 acorn each).