Issued in 1949, this striking 30 Pfennig red stamp was originally part of the Deutsche Post “Worker” definitive series of the Soviet Zone. It features a laborer raising his arm, symbolizing reconstruction after World War II. The bold diagonal red “BERLIN” overprint was applied when postal administration was transferred to Berlin, marking it as a distinct local issue during the early Cold War division. A significant transitional piece from the postwar German postal history, valued by collectors for its clear overprint and crisp engraving.