Very rare NICKEL FINE, Nike 5 złoty coin from 1928, minted in an unknown mintage.
Probe issue from the Brussels Mint, without mintmark. Distinguished by the type of metal on which it was struck, the concave inscription ESSAI with the number 30 below and a smooth edge.
Scratch on the obverse.
Very nice specimen.
Nickel, diameter 33 mm, weight 12.86 g