Poland's postwar coinage program involved substantial behind-the-scenes experimentation before any type reached circulation, and the 1959 5 Złotych fisherman design generated multiple trial strikes in varying compositions as the mint worked toward a final specification. This CuNi example is one of those pre-production tests — never released, surviving today almost exclusively through institutional collections and the occasional estate sale of former mint personnel.
The Fischer and Parchimowicz references catalogue it, but population data remains genuinely thin.
Poland's postwar coinage program involved substantial behind-the-scenes experimentation before any type reached circulation, and the 1959 5 Złotych fisherman design generated multiple trial strikes in varying compositions as the mint worked toward a final specification. This CuNi example is one of those pre-production tests — never released, surviving today almost exclusively through institutional collections and the occasional estate sale of former mint personnel.
The Fischer and Parchimowicz references catalogue it, but population data remains genuinely thin.