The birth of the forthcoming royal baby , due in April , will be marked with a special £5 coin . A £5 coin will be issued to celebrate the birth of the Duke and Duchess of Cambridge 's second child . The forthcoming royal baby - due mid to late April - will be fourth in line to the throne and is not expected to ever rule as monarch , but just like older brother Prince George the occasion will be marked with a commemorative coin . The Queen - the baby 's great-grandmother - approved the decision at a meeting of the Privy Council at Buckingham Palace on March 19 . Thousands of commemorative coins were struck to celebrate the arrival of George in July 2013 and sold out within days . The Royal Mint produced 10,000 solid silver crown-sized £5 coins , which cost £80 each , and 2,013 22 carat gold sovereigns , which cost £800 each . Both featured the prince 's namesake St George . Babies born on the same day as George were also entitled to receive one of 2,013 free 'lucky ' silver pennies . When George turned one , the occasion was also marked by a commemorative £5 coin - making him the first member of the royal family to have his first birthday honoured with a new UK coin . His christening was also marked with a coin . The coin to mark the new child 's birth will be similar to the silver crown-sized piece that marked Prince George 's first birthday on July 22 , 2014 .
Birth of fourth-in-line , expected in April , will be marked with silver coins . Thousands of coins struck to celebrate arrival of The Queen - the in July 2013 .