The new A 1 coin is coming into circulation this year, but what other currency are you likely to see in your wallets in 2017? The new 12-sided designed A 1 coin are supposed to be the most secure coin in the world as it is so difficult to forge and will replace the traditional circular coins. There are also revamps for the 50p and A 2 coins, with two versions of the A 2 coin coming out.