1971 AD., Poland, socialist Peoples Republic, 50th anniversary of third Silesian uprising commemorative, Warsaw mint, 10 ZÅ‚otych, KM Y 64.

Poland, socialist Polish Peoples Republic (1949-1990), 50th anniversary of third Silesian uprising commemorative, engraver: Wacław Kowalik, Warsaw mint, 1971 AD.,
Æ (ø 28 mm / 9,32 g), copper-nickel, 9,50 g theoretical mint weight, mintage 2.000.000 , axis medal alignment ↑↑ , reeded edge, corrosion spots,
Obv.: POLSKA RZECZPOSPOLITA LUDOWA / 19 – 71 / {mW} / ZŁ 10 ZŁ , national coat of arms of Poland dividing date: eagle, wings spread, mint mark {mW} monogram under r. claw, value below.
Rev.: 1921 / 1971 / 50 / ROCZNICA III / POWSTANIA / ÅšLÄ„SKIEGO / WK , monument of Silesian Insurgents in Katowice, Silesian Cross medal of Insurrection (a cross with eagle at center) to l.
KM Y 64 ; Parch. 239 ; Schön 58 .

Year / Mint Mark / Mintage
1971 / mW / 2.000.000

The Silesian Uprisings (German: Aufstände in Oberschlesien; Polish: Powstania śląskie) were a series of three armed uprisings of the Poles and Polish Silesians of Upper Silesia, from 1919 to 1921, against German rule; the resistance hoped to break away from Germany in order to join the Second Polish Republic, which had been established in the wake of World War I. In the latter-day history of Poland after World War II, the insurrections were celebrated as centrepieces of national pride. Between 1919 and 1921 three uprisings took place in Upper Silesia. The conflict between Polish and German inhabitants finished only after the third and largest one. It resulted in incorporating a part of Upper Silesia to Poland in 1921.
More on https://en.wikipedia.org/wiki/Silesian_Uprisings