3 Mark Pattern

Hamburg's 1922 aluminum pattern was produced as German mints scrambled to find workable substitutes for increasingly scarce base metals during the postwar economic collapse. The city-state retained its independent minting authority longer than most German territories, and Hamburg's pattern issues from this period reflect local attempts to solve the denomination problem ahead of federal direction. Aluminum was ultimately rejected for circulating coinage at this weight — the metal's low density made larger denominations feel unconvincing in hand, and the Weimar government standardized differently before Hamburg's proposals advanced further.