5 Pounds - Elizabeth II Platinum Wedding of Queen Elizabeth II and Prince Philip - Jubilee photo

The platinum wedding anniversary — 70 years — was marked by very few couples in British royal history, and Elizabeth and Philip's 2017 milestone was the first time a reigning British monarch had reached it. Alderney, one of the smaller Crown Dependencies in the Bailiwick of Guernsey, has long used commemorative crown-sized issues as a primary revenue mechanism rather than circulating currency. This piece, gold-plated copper rather than any precious metal, sits at the lower end of the commemorative market despite the historical weight of the occasion it marks.