An exquisite piece.
Obverse: bust of Bolesław Chrobry to the left, under the bust the mark of the State Mint, in the rim the legend:
BOLESŁAW CHROBRY 1025+1925;
Reverse: stylized state eagle, in the rim legend:
REPUBLIC OF POLAND 10 ZLOTYS 10;
Diameter 19 mm, weight 3.22 g.