King Charles III’s new cypher has been revealed ahead of the official period of royal mourning ending.
The new sovereign’s monogram will appear on government buildings, state documents and on some post boxes in the coming months and years.
The cypher will consist of initials of the new monarch’s name, Charles, and title, Rex – Latin for King, with III within the R, alongside a representation of the crown above the letters.
The monogram is Charles’ personal property and was selected by the monarch from a series of designs prepared by the College of Arms.
A Scottish version features the Scottish Crown, and was approved by Lord Lyon, King of Arms.
The new monarch travelled to Scotland soon after the Queen’s funeral last Monday, with the period of royal mourning lasting for seven days after her burial.
The cypher will also be used by government departments and by the Royal Household for franking mail.
The decision to replace cyphers will be at the discretion of individual organisations.
The process will be a gradual one and in some instances the cyphers of previous monarchs can still be seen on public buildings and street furniture especially post boxes.
The College of Arms, which designed the cyphers, was founded in 1484 and is responsible for creating and maintaining official registers of coats of arms and pedigrees.
The heralds who make up the college are members of the Royal Household and act under crown authority.
A Cabinet Office spokesperson said of replacing the late Queen’s cypher with the Charles’ monogram: “Where changes can be made easily, such as digital branding, they can be made immediately.
“Physical items such as signage or stationery will be replaced gradually over time as the need arises.”