One Pound Coin Specifications
Synopsis
On 28 March, the old round £1 coin will be replaced by the new 12 sided £1 coin. We compare the specifications.
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Out With the Old, In With the New
On Tuesday 28 March 2017, Britain will introduce the new 12 sided £1 coin. This new angular one pound coin will replace the round £1 coins which we have been using since 1983. This will be the first time the UK has had a new circulation coin since the launch of the bimetallic £2 coin in 1997.
The new 12 sided £1 coin has been created to preserve the integrity of the British currency; it is said that this new £1 coin will be the most secure coin in the world.
We will be stocking the new £1 coin in a number of finishes including Brilliant Uncirculated, Silver Proof, gold proof and the 2016 Dated Two Coin New and Old £1 Brilliant Uncirculated Set.
One Pound Coin Specifications - New and Old
The new pound coin will be wider, thinner and lighter than the old pound. To see the variations between the new and the old coins, have a look at our table:
| | New 12 Sided £1 Coin 2017 | Old Round £1 Coin 1983-2016 |
| Diameter | 23.03mm | 22.5mm |
| Weight | 8.75g | 9.5g |
| Thickness | 2.8mm | 3.15mm |
| Metal Alloy | Bimetallic Outer ring - Nickel-brass Inner ring - Nickel-plated nickel-brass | Nickel-Brass |
Or take a look at our diagrams:
The Obverses
The Reverses
The Edge View
The new £1 coin is bigger and not as sharply angular as the brass threepence which was withdrawn in 1971.
Comparison Between the Brass Threepence and the New £1 Coin
The Round Pound Will Be Demonetarised
You have until the 15 October 2017 to spend your old round pound coins. After that, they will be demonetarised and you will need to submit them to the Bank of England. So crack open the kid's piggy banks, empty your change jars and check behind the back of the sofas.
Read our blog Introducing the New 12 Sided One Pound Coin for the full story behind the new £1 coin.
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