1 Grosz

Poland's earliest postwar aluminum coinage was struck under direct Soviet economic supervision, with the Mint of Poland subordinated to broader COMECON monetary policy after 1949. The grosz denominations from this period were produced in aluminum partly as a practical response to postwar metal shortages, but also because aluminum had become the Soviet bloc's preferred coinage material — cheap, domestically sourceable, and ideologically acceptable as a workers' industrial metal.

The 1949–1953 window covers the most doctrinaire phase of Stalinist Poland under Bolesław Bierut, when currency reform was weaponized against private capital.