100 Dollars - Elizabeth II John F. Kennedy

This coin was issued to mark the centennial of Kennedy's birth in 1917. Niue has operated a prolific bullion and commemorative program since the 1990s, licensing its sovereignty to private minting arrangements — in this case almost certainly struck by the New Zealand Mint on contract. The .999 fine, 31.1g specification places it squarely in the one-troy-ounce bullion category, though it circulates entirely as a collectible; Niue's actual GDP would not sustain a $100 face value in domestic commerce.