2026 King Charles III 'The Penny Drops' £5 Gold Proof Coin

Description

2026 King Charles III 'The Penny Drops' £5 Gold Proof Coin + Boxed / COA Developed as the centrepiece of The Great British Treasure Hunt, this coin forms part of a unique collectible experience combining numismatics with puzzle-solving and discovery. Designed as both a collector’s piece and an interactive challenge, it gives owners the opportunity to take part in a nationwide treasure hunt. The design is inspired by the legacy of Sir Isaac Newton, reflecting his long association with the Royal