Banknotes and stamps are just some of the everyday items that are set to change now Charles has become king. But there is another thing we have become so used to that will be different - the royal cypher.
The cypher is a monogram device that consists of the monarch's name and title, Wales Online reports. The cypher can be seen on postboxes and police helmets.
What did ER stand for?
Read more: Bungalow in unique location at Nottinghamshire nature reserve up for auction
The Queen’s royal cypher was either ER or EIIR. The E, naturally, stood for Elizabeth, while the R was from regina, the Latin for queen.
The II was to mark that she was Elizabeth II. However, in Scotland the II was not used, as Scotland did not recognise Elizabeth I, instead being ruled by Mary Queen of Scots.
Will Charles III use CR?
The new King has confirmed he will rule as Charles III. He could have been known by one of his middle names, Philip, Arthur or George.
His royal cypher will be CR or CIIIR, meaning King Charles III. The R will stand for Rex, the Latin for king.
The accompanying crown is also set to change. While English queens use the St Edward’s Crown, or a variant of it, kings traditionally use the more rounded Tudor crown.
What else will change?
Coins featuring the new King will show him facing to the left, while Elizabeth II faced to the right. It is a tradition from the 17th century to alternate the way monarchs face. Banknotes will also gradually be replaced with the image of King Charles III.
The new King will feature on British and Commonwealth stamps. He may already have sat for such sculptures or portraits, and he will have to approve the designs.
Read next:
Locals surprised as 'awesome' Nottingham pub is put on the market
Designer Kurt Geiger store set to close on Nottingham's 'most expensive shopping street'
Bungalow in unique location at Nottinghamshire nature reserve up for auction
Nottinghamshire 'gem' to star in Channel 5 show searching for UK's poshest farm shop