Variety with obverse legend CASIMI, ARGEN REGN POL and with Wieniawa coat of amrs in reverse rim of Bogusław Leszczyński.
The first vintage of John II Casimir's 1/4 thalers minted in the mint in Fraustadt, their issue took place in the years 1650-1655.
Coin specified in Shatalin's catalogue as R4.
Attractive coin with plenty of mint luster.