1982 AD., Poland, socialist People's Republic, Boleslaw III Krzywousty commemorative, Warsaw mint, 50 ZÅ‚otych, KM Y 133.

Poland, socialist People's Republic, Polish Rulers Series - Boleslaw III Krzywousty commemorative, engraver: Ewa Olszewska-Borys, Warsaw mint, 1982 AD.,
50 Złotych (ø 30,5 mm / 11,64 g), copper-nickel (80% copper, 20% nickel), 11,70 g. (?) theor. mint weight, mintage 2.616.000 , axis medal alignment ↑↑ (0°), reeded edge,
Obv.: POLSKA RZECZPOSPOLITA LUDOWA / 19 - 82 / {mW} / ZŁ 50 ZŁ , eagle dividing date, value below.
Rev.: BOLESLAW III – KRZYWOUSTY / 1102-1138 , his bust 2/3 left.
KM Y 133 ; Parchimowicz 264 ; Schön 126 .

Year / Mint Mark / Mintage
1982 / mW / 2.616.100
1982 / mW / 5,000 proof

Bolesław III Wrymouth (also known as Boleslaus III the Wry-mouthed, Polish: Bolesław III Krzywousty) (20 August 1086 – 28 October 1138), was a Duke of Lesser Poland, Silesia and Sandomierz between 1102 and 1107 and over the whole Poland between 1107 and 1138. He was the only child of Prince Władysław I Herman and his first wife Judith, daughter of Vratislaus II of Bohemia.
Bolesław III Wrymouth has been recognized by historiography as a symbol of Polish political aspirations until well into the 19th century.

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