5 Dollars - Elizabeth II Kaiser Wilhelm II, Gold Bullion

Nauru's authority to issue coinage derives from its status as an independent republic, though the island's economy has lurched through boom and bust cycles tied almost entirely to phosphate extraction — a resource that was largely exhausted by the early 2000s. The Bank of Nauru itself suspended operations in 2002 amid a broader financial collapse. That a coin bearing Kaiser Wilhelm II was issued under its nominal authority six years later reflects how thoroughly Nauru's "coinage" program had become a vehicle for the international collector market rather than any functioning domestic monetary system.

Wilhelm II's connection to Nauru is genuine: the island was a German protectorate from 1888 until Australian forces seized it in 1914.