5 Pounds - Elizabeth II Edward V

Edward V is one of only two English monarchs never to have been crowned — his reign lasted roughly 86 days in 1483 before he and his brother Richard disappeared into the Tower of London, almost certainly murdered on the orders of their uncle, who took the throne as Richard III. The exact fate of the Princes in the Tower remains unresolved; no confirmed remains, no trial, no contemporary admission.

Alderney, a Crown dependency outside the UK but not part of it, issues commemorative coins under Royal Mint arrangements — giving pieces like this legal tender status that purely private issues lack.