5 Dollars - Elizabeth II Wedding of Prince Charles and Lady Diana Spencer

This piece belongs to a crowded genre of retrospective royal commemoratives that proliferated decades after the 1981 wedding itself — issued forty years on, in 2021, by Cook Islands under its longstanding arrangement with the New Zealand Treasury that permits it to produce legal tender coinage largely for the collector market rather than domestic circulation. The original wedding on July 29, 1981 drew a global television audience estimated at 750 million, making it one of the most-watched broadcasts in history to that point.

At 0.5 grams of .9999 fine gold, the economics are almost entirely premium over metal.