About the Design:

Obverse
Crowned eagle with wings open, date above. Initials of engraver "W" above left claw, "J" above right claw.

Script: Latin

Lettering:
♦1923♦RZECZPOSPOLITA POLSKA
W J

Translation:
Republic of Poland 1923
WJ

Engraver: Wojciech Jastrzębowski

Reverse
Value in centre, surrounded by eight overlapping leaves.

Script: Latin

Lettering:
10
GROSZY

Composition    Nickel
Weight            2 g
Diameter    17.6 mm
Thickness    1 mm
Shape            Round