The last type of Warsaw weights in very nice state of preservation.
Piece from Tadeusz Kalkowski's collection, complete with his envelope.
Obverse: eagle holding a key and a sword
Reverse: horizontal inscription I AUREI NUMMI PONDUS 1791; in the rim:
67 EX MARCH COLONIENSE.
Brass, diameter 19.3 mm, weight 3.46 g.
