The first coins featuring the King will appear in circulation in post offices around the UK from Thursday.
The King's portrait will first appear on a 50p, with the reverse, or "tails" side of the coin, commemorating the life and legacy of Queen Elizabeth II. A commemorative version of the coin was released in October, generating record visitors to the Royal Mint's website in the 24 hours following.
A total of 4.9 million 50p coins will enter circulation across 9,452 Post Office branches throughout December. Coins will be distributed as change when customers make purchases.