1986 AD., Poland, socialist People's Republic, Władysław I the Elbow-high commemorative, Warsaw mint, 100 Złotych, KM Y 160.

Poland, socialist People's Republic, Polish Rulers Series, Wladyslaw I Lokietek (the Elbow-high) commemorative, engraver: Stanisława Wątróbska-Frindt, Warsaw mint, 1986 AD.,
100 Złotych (ø 29,5 mm / 10, g), copper-nickel (80% copper, 20% nickel), 10,80 g. (?) theor. mint weight, mintage 2.539.700 , axis medal alignment ↑↑ (0°), reeded edge,
Obv.: POLSKA RZECZPOSPOLITA LUDOWA / 19 – 86 / {mW} / ZŁ 100 ZŁ , eagle dividing date, value below.
Rev.: WŁADYSŁAW I ŁOKIETEK - 1320 – 1333 / {SW}, crowned bust of King Władysław I Łokietek r., head facing, engraver´s SW-monogram above left shoulder.
KM Y 160 ; Par. 300 ; Schön 154 .

Year / Mint Mark / Mintage
1986 / mW / 2.539.700

Władysław the Elbow-high or the Short (Polish: Władysław I Łokietek; c. 1260 – 2 March 1333) was the King of Poland from 1306 to 1333, and duke of several of the provinces and principalities in the preceding years. He was a member of the Piast family of rulers, son of Duke Casimir I of Kujawy, and great-grandson of King Casimir II the Just. He inherited a small portion of his father’s lands, but his dominion grew as some of his brothers died young. He tried for rule of the Duchy of Krakow (the Seniorate Province) in 1289, after the death of his half brother Leszek II the Black and the withdrawal from contention of his ally Bolesław II of Masovia, but was unsuccessful. After a period in exile during the rule of Wenceslas II, Władysław rebounded to re-assume some duchies after Wenceslas’ death, and then gained Krakow in 1306 after the murder of Wenceslas III. He temporarily took control of part of Greater Poland after the death of his ally Przemysł II, lost it, and then regained it later on. He conquered Gdansk Pomerania, and left it to familial governors. For defense of this territory he turned to the Teutonic Knights, who then demanded an exorbitant sum or the land itself as an alternative. This led to an extended battle with the Knights, which was not resolved after either a papal trial or Władysław’s own death. Perhaps his greatest achievement was gaining papal permission to be crowned King of Poland in 1320, which occurred for the first time at Wawel Cathedral in Krakow. Władysław died in 1333, and his reign was followed by the rule of his more renowned son, Casimir III the Great.

More on https://en.wikipedia.org/wiki/Władysław_I_the_Elbow-high