1500 Guaraníes Otto von Bismarck

Paraguay's 1974 commemorative gold series was issued under the Stroessner dictatorship, a regime that used high-denomination precious metal coins almost exclusively as hard-currency revenue generators — sold directly to foreign collectors and never intended for domestic circulation. Bismarck's inclusion alongside other European statesmen in the series reflects no particular historical connection to Paraguay; the subjects were chosen for international collector appeal.

KM#121 is part of a multi-subject run struck by the European minting contractors engaged by Asunción during this period. Mintages were tightly controlled and documentation from the Stroessner era remains inconsistent.