Rare variety with obverse legend IOAN CAS and with a star enclosed in a triangle at the beginning of the reverse legend. On the reverse, on the sides of the city coat of arms, the initials HDL, representing Hans Dawid Lauer, mintmaster of the Thorn mint from 1649 to 1668.
Coin specified in Shatalin's catalogue as R4 rarity.
Specimen with excellent provenance from the Potocki Collection with owner mark on the obverse.
