60 Centavos - Republic

Portugal's postwar coinage reforms pushed through a series of base-metal issues during the late 1950s, as the Estado Novo government under Salazar sought to rationalize a circulation system still cluttered with wartime-era pieces. The 60 centavos denomination had a notoriously short production window — just two years — before inflationary pressure rendered small-value coins economically impractical to mint and circulate. Surviving examples in uncirculated condition are scarcer than the brief run suggests, as the alloy's nickel content made it prone to discoloration in storage.