It's flat, round, and instantly forgettable. Then comes along the 2016 £1 coin, a chunky 12-sided marvel that punched the old pound into retirement. Minted from 2016 ahead of its official launch on 28 March 2017, this coin isn't just pocket change — it's one of the most secure and visually distinctive coins Britain has ever produced.

The End of an Era: Why Britain Needed a New £1 Coin

For more than three decades, the round £1 coin was a fixture of British wallets, vending machines, and piggy banks. But its design had a fatal flaw: it was almost embarrassingly easy to counterfeit. Estimates from the Royal Mint suggested that roughly 3% of all round £1 coins in circulation were fakes, costing the UK economy millions every year and frustrating retailers and vending operators alike.

The British government and the Royal Mint announced the replacement back in 2014, kicking off one of the biggest coin-recall exercises in UK history. Two years of design, testing, and manufacturing later, the coins started rolling off the production lines stamped with the 2016 date. By the time the new coin entered general circulation on 28 March 2017 — proclaimed by Chancellor Philip Hammond as "the most secure coin in the world" — the writing was on the wall for the old round pound. The demonetisation date was set for 15 October 2017, giving the public just over six months to swap their old coins before they ceased to be legal tender.

"This coin will be a defining symbol of modern Britain." — Adam Lawrence, Chief Executive of the Royal Mint, 2016

Anatomy of a 12-Sided Wonder

What makes this new £1 so special? Plenty. The new coin ditches the familiar round shape for a distinctive dodecagonal (12-sided) form inspired by the old threepenny bit, giving it a unique feel and rolling edge that helps visually impaired users tell it apart from other denominations. It weighs 8.75g and measures 23.43mm across, making it slightly thinner but noticeably heavier than its predecessor.

Two Distinct Sides

  • Obverse (heads): The fifth definitive portrait of Queen Elizabeth II by Jody Clark, the same design used across UK coinage at the time.
  • Reverse (tails): The Royal Coat of Arms — a heraldic shield flanked by a lion and a unicorn — designed by David Pearce and chosen through a public competition that drew nearly 6,000 entries.

Security Features That Actually Work

The Royal Mint pulled out every trick in the book to keep counterfeiters guessing:

  • Bi-metallic construction: A gold-coloured nickel-brass outer ring with a silver-coloured nickel-plated steel inner disc.
  • Holographic image: A latent image that changes from a "1" to a "£" symbol when the coin is tilted — visible on the reverse.
  • Micro-lettering: Tiny inscriptions along the rim reading "ONE POUND" — visible only under strong magnification.
  • Milled edges: Alternating decorative grooves around the perimeter to deter clipping and counterfeiting.

The combination was so effective that the Royal Mint confidently claimed the new coin would be resistant to counterfeiting for decades — a bold boast that has largely held up in the years since.

Mintage Figures and Collector Appeal

The 2016 £1 coin is the first year of issue, making it a must-have for collectors building complete date runs of the new series. The Royal Mint produced two principal versions in this window:

  • 2016 dated coins: Around 64 million struck ahead of the public launch, mostly entering circulation in early 2017.
  • 2017 dated coins: A much larger mintage that dominated pocket change throughout 2017 and beyond.

For collectors, the 2016 dated coins tend to carry a small premium over the 2017 issues in higher mintages, though the gap is modest for circulation strikes. Proof and special edition versions — including Brilliant Uncirculated (BUC) and silver proof strikes sold in Royal Mint sets — are far more valuable, often fetching between £8 and £40 depending on condition and packaging.

Common Varieties Worth Watching

While 2016 coins are relatively uniform, several subtle varieties excite more advanced numismatists:

  • Differences in the micro-lettering position around the rim.
  • Variations in the alignment of the holographic latent image.
  • Edge-lettering orientations that read correctly whether the coin is flipped horizontally or vertically.

The Legacy and What Comes Next

By mid-2018, the old round £1 coin had effectively vanished from tills, post boxes, and jingling change jars, scooped up in an estimated swap-in of £84 million worth of old pounds ahead of the deadline. The 2016 version proved the original design brief: counterfeiting rates dropped dramatically, and vending machine operators reported big improvements in coin recognition across the country.

Looking ahead, the coin faces new questions. King Charles III's effigy is set to replace Queen Elizabeth II on UK coinage, meaning a portrait-change £1 is almost certainly on the horizon. For collectors, that makes current Elizabeth II 2016 £1 coins increasingly attractive as the closing chapter of a long-running numismatic era — and a tangible link to the moment Britain seriously upgraded its pocket change.

Whether you're a casual coin-collector, a fan of British design, or someone with a jar of spare change gathering dust somewhere, the 2016 £1 coin is a small piece of monetary history worth a proper second look.

Key Takeaways

  • The 2016 £1 coin replaced the old round pound that had been plagued by widespread counterfeiting.
  • Its distinctive 12-sided shape, bi-metallic composition, and holographic features make it one of the most secure UK coins ever produced.
  • 2016-dated coins are the first-year issue and carry a modest collector premium over 2017-dated circulation coins.
  • Proof versions in silver or Brilliant Uncirculated grade fetch a clear premium over standard circulated examples.
  • The coin represents the final Elizabeth II era in UK £1 coinage, making it a likely long-term collector favourite.