In 2017 to celebrate the new Twelve Sided Nations of the Crown £1 One Pound Coin which will enter circulation in 2017, the Royal Mint have released this special Limited Issue 12 Sided Nations of the Crown £1 One Pound Platinum Proof Coin struck in solid fine 999.5 Platinum.

The new coin has a number of features that make it much more difficult to counterfeit.

12-sided – its distinctive shape makes it instantly recognisable, even by touch.

Bimetallic – it is made of two metals. The outer ring is 22 Carat Gold and the inner ring is 999.5 Platinum.

Latent image – it has an image like a hologram that changes from a ‘£’ symbol to the number '1' when the coin is seen from different angles.

Micro-lettering – it has very small lettering on the lower inside rim on both sides of the coin. One pound on the obverse “heads” side and the year of production on the reverse “tails” side, for example 2016 or 2017.

Milled edges – it has grooves on alternate sides.

Hidden high security feature – a high security feature is built into the coin to protect it from counterfeiting in the future

• Limited Mintage of 232 Worldwide
• Finished to Royal Mint's Proof Quality in Solid 999.5 Pure Platinum
  
• Twelve Sided Nations of the Crown £1 One Pound Coin
• Royal Mint Boxed with Certificate of Authenticity