Literature: Shatalin (2021) WS51- I- 12, e-Catalog: Pączkowski 1310.a2 (R3).
Considerable rarity variety of obverse legend with P &. S and the king's name CASIM. Variant of the reverse legend with REGNI. PO. Additionally double-struck in MW on the reverse.
Nicely minted and patinated, with noticeable luster on both sides.