This 45 groszy Polish definitive stamp, issued around 1950, commemorates the construction of Nowa Huta, the massive industrial and residential complex built near Kraków. The design by B. Brandt and engraved by E. Konecki features a stylized view of a steel mill, complete with towering blast furnaces and piping—symbolizing postwar socialist industrialization. The caption “BUDUJEMY NOWĄ HUTĘ” translates to “We Are Building Nowa Huta,” reflecting the propaganda of Poland’s Six-Year Plan emphasizing heavy industry and workers’ progress. Printed by P.W.P.W. (Polska Wytwórnia Papierów Wartościowych), this issue is a fine example of early socialist realism in Polish philately.