50 Dollars - Elizabeth II Celebi

Niue's early 2000s commemorative gold program was essentially a licensing operation — the island nation's actual GDP was negligible, and coin revenue from foreign collectors formed a measurable part of government income. The "Celebi" designation almost certainly references Evliya Çelebi, the 17th-century Ottoman traveler whose Seyahatnâme documented decades of journeys across three continents, though Niue's connection to that subject is purely commercial.