1974 AD., Poland, socialist Peoples Republic, 25th anniversary of the COMECON commemorative, Warsaw mint, 20 ZÅ‚otych, KM Y 70.

Poland, socialist Peoples Republic, 25th anniversary of the COMECON commemorative, engraver: J. Markiewicz, Warsaw mint, 1974 AD.,
20 Złotych (ø 29 mm / 9,96 g), copper-nickel, 10,15 g theoretical mint weight, mintage 2.000.000 , axis medal alignment ↑↑ , reeded edge, corrosion spots,
Obv.: POLSKA • RZECZPOSPOLITA • LUDOWA • 1974 / {mW} / 20 / ZŁOTYCH / JM . N , national coat of arms of Poland: eagle, wings spread, mint mark {mW} monogram under r. claw, value and engraver´s initials below.
Rev.: XXV / LAT / RWPG , (“25 years of Comecon“) , legend in three lines within circle whose bottom part is a gear wheel and the top part are petals of sunflower.
KM Y 70 ; Parchimowicz 247 ; Schön 65 .

Year / Mint Mark / Mintage
1974 / mW / 2.000.000

Comecon (Council for Mutual Economic Assistance) - organisation founded in 1949 by the Soviet Union as an answer to Marshall plan to rebuild Europe after World War II. Soviet Union forced Eastern European countries to refuse the money coming from Marshall Plan and instead offered them participation in the Comecon, which was a Soviet plan to rebuild this part of Europe. There were 11 members of the Comecon in 1978: Albania, Bulgaria, Cuba, Czechoslovakia, East Germany, Hungary, Mongolia, Poland, Romania, USSR and Vietnam). The Council existed until 1991. The Council for Mutual Economic Assistance (Russian: Совет Экономической Взаимопомощи, Sovet Ekonomicheskoy Vzaimopomoshchi, СЭВ, SEV; English abbreviation COMECON, CMEA, or CAME) was an economic organization from 1949 to 1991 under the leadership of the Soviet Union that comprised the countries of the Eastern Bloc along with a number of communist states elsewhere in the world.

More on https://en.wikipedia.org/wiki/Comecon