2026 'The Penny Drops' Great British Treasure Hunt £5 Gold Proof Coin

New for 2026, 'The Penny Drops' with a Great British Treasure Hunt from The Royal Mint. Bringing an exciting new twist to UK coinage, the release is inspired by Sir Isaac Newton and features an interactive puzzle.

This one-of-a-kind treasure hunt is packed with hidden clues, puzzles and secret mechanisms to be discovered. During the treasure hunt journey, players will unlock challenges and uncover mysteries as they delve deeper and compete for rewards. 

Those who complete the final stage of the treasure hunt will be in the running for a chance to win a grand prize of solid gold.

Each gold proof purchase of 'The Penny Drops' also includes a £5 BU Base Metal variant free of charge, so that you are able to play The Hunt without worry.

• Metal: Gold
• Fineness: 916.7 (22 carat)
• Finish: Proof
• Pure Metal Content: 1.1771 troy ounces
• Tax Benefits: Exempt from Capital Gains Tax & VAT
• Weight: 39.94 grams
• Presentation: Box with treasure hunt envelope
• Diameter: 38.61mm
• Limited Edition Presentation: 100 coins
• Maximum Coin Mintage: 110 coins

For more information regarding The Great British Treasure Hunt, we recommend checking through The Royal Mint's information page.

Royal Mint Official Partner

Chards is an official partner of The Royal Mint. Newly minted Royal Mint products, are sourced directly from their mint headquarters in Llantrisant, Wales.

Sir Isaac Newton

Rising to prominence in the late 17th century, Sir Issac Newton was an English mathematician, physicist, astronomer, alchemist, theologian, author and inventor. As his title and roles suggest, he was a highly respected figure and at the centre of multiple world-changing scientific discoveries including the laws of motion, gravity and the light spectrum.

In 1696, Sir Isaac Newton took the post of Warden of The Royal Mint, taking a leading roll in England's Great Recoinage before moving to the role of Master of the Mint in 1699. Newton took these roles as seriously as he would any work and reformed the English currency, bringing harsh penalties for counterfeiters whilst heading his own investigations into the criminal world of fake coinage.

What Is Capital Gains Tax?

Capital Gains Tax (CGT) is a form of levies imposed on the profit garnered from the sale of assets, such as real estate, investments, and collectibles. In the United Kingdom, the present CGT allowance is £3,000 per annum per individual, which implies that one can earn up to £3,000 from the sale of assets prior to being subject to CGT.

For UK residents, bullion coins which are UK legal tender pound sterling coins are exempt from capital gains tax (CGT).

The obverse features the uncrowned portrait of His Majesty King Charles III, designed by Martin Jennings, framed by the following text:

CHARLES III · D · G · REX · F · D · 5 POUNDS ·

The reverse features a puzzling design focused around a central latent image, completed by the following text:

**THE** *PENNY* *DROPS* *2026*