5 Zlotys Trial Strike

Trial strikes from Mennica Państwowa in the late 1970s were produced as internal approval pieces during the redesign cycle for circulating coinage — submitted to the National Bank of Poland for authorization before any production dies were committed. Most never left the mint through official channels. The handful that have surfaced in Western collections typically passed through the numismatic market during the 1980s and 1990s, when Polish state institutions quietly liquidated proof and pattern material for hard currency.