100 Pounds - Elizabeth II Duke and Duchess of Cambridge 10th Wedding Anniversary

The Isle of Man has issued commemorative pieces under the Cambridge name since the 2011 wedding itself, and this kilogram format sits at the upper end of a long-running series of royal occasion strikes from Pobjoy Mint. The tenth anniversary issue is one of several simultaneous formats released in 2021, ranging from small gold fractions up to this weight class.

Pobjoy Mint, based in Surrey, held the Isle of Man contract for decades before transitioning — the relationship produced an unusually high volume of royal commemorative issues relative to the island's actual monetary needs.