10 Pence - Charles III Roach, Colourised

Guernsey maintains its own currency distinct from the British pound sterling — legal tender only on the island and not accepted in the United Kingdom proper. The roach was selected as part of a broader natural history series celebrating Guernsey's freshwater and coastal species, a deliberate nod to the island's ecological identity at a time when conservation messaging has become increasingly tied to commemorative coinage across the Crown Dependencies.

The colourisation was applied post-strike, a process that disqualifies these pieces from most circulation-grade holders but drives collector demand in retail markets.