One pound (British coin)
The main purpose of redesigning the coin was to combat counterfeiting. As of March 2014 there were an estimated 1,553 million of the original nickel-brass coins in circulation, of which the Royal Mint estimated in 2014 that just over 3% were counterfeit. The new coin, in contrast, is bimetallic like the current £2 coin, and features an undisclosed hidden security feature called "iSIS" (Integrated Secure Identification Systems).
One pound (British coin)-3