Rare silver ducat from the reign of Stanisław August Poniatowski.
The coin is present in the collections of Kubicki and Chomiński and in the collection of Karolkiewicz.
The rarity in the Kamiński-Kurpiewski duo's catalog is specified as R8.
Ex. Green Raven Collection.
Obverse: king's head facing right
STANISLAUS AUG DG REX POL MDL
Reverse: coat of arms shield, on the sides the date 17 - 79, below the letter EB Efraim Brenna
Diameter 22 mm, weight 2.51 g
