Beautifully minted, very well preserved piece.
A very rare variety with the ARGE legend on the reverse UNSIGNED in Szlapinski and Biełopolski.
Obverse: crowned royal monogram in the pearl rim, legend in the rim:
POTIORQ3:METALLO:EST, in outer rim legend:
DAT:PRETIVM:SERVATA:SALVS;
Reverse: in the pearl rim a crowned shield with the coats of arms of the Crown, Grand Duchy and Snopes, in the field of the shield the denomination XXX GRO/-POL-, on the sides of the shield initials A-T, in the outer rim legend:
MONET:NOV:ARGE:REG:POL-1663;
