1 Pound - Elizabeth II Longest Reigning Monarch

Tristan da Cunha, a British Overseas Territory in the South Atlantic with a permanent population of around 250, issues coins primarily for the collector market — no functioning retail economy on the island runs on struck coinage. This piece was released to mark Elizabeth II surpassing Queen Victoria's reign length on September 9, 2015, a record that stood until her death in 2022.