50 Dollars - Elizabeth II Gracia Patricia

Gracia Patricia was the Monegasque title adopted by Grace Kelly upon her 1956 marriage to Prince Rainier III — a union that generated enormous international press and effectively turned Monaco into a permanent fixture of celebrity culture. Niue has leveraged its Crown dependency status to issue legal tender collector coins on behalf of foreign subjects and themes since the 1990s, operating essentially as a licensing vehicle for the global bullion and numismatic market. This kilogram piece is part of that commercial tradition rather than any monetary necessity.

The 25 inset diamonds make secondary-market authentication non-trivial; stones have been replaced on examples in the past without altering surface appearance significantly.