The death of Queen Elizabeth II on September 8 marks a monumental moment in the history of the United Kingdom.
It signals the end of the Elizabethan era and, with the beginning of the reign of King Charles III, marks the beginning of the Carolean age.
And with the end of one reign and the start of another, many changes will be made to mark this, including changes to everyday objects that bear the monarch's portrait.
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The Queen's likeness features on stamps, coins and notes, and her initials are on postboxes, uniforms and government signage throughout the UK.
In a huge and costly task, all of these things will need to change, which may take several years if not decades to complete. Here are just some of the everyday changes you can expect to see in the coming years:
The Carolean Age
The new King will be known as King Charles III and his ascension begins a return to the Carolean age - a term first used during the reign of King Charles I from 1625 to 1649.
Carolean originates from the Latin name for Charles, Carolus.
King Charles III was proclaimed at the Accession Council at 10am on Saturday morning. Declaring her support for the King, the prime minister heralded a "new Carolean age".
Stamps
King Charles III will at some stage feature on stamps here and around the Commonwealth.
For her first stamps as monarch, the Queen was photographed by Dorothy Wilding three weeks after acceding to the throne and again around two months later, finally approving the image in May 1952.
This portrait from 1952 was replaced in 1967 by the famous sculptured head by Arnold Machin, accompanied by the tiny cameo silhouette of the Queen.
Money
Coins featuring the new King will show him facing the left, while Elizabeth II's effigy faces to the right. It's a tradition from the 17th century to alternate the way successive monarchs are facing.
The coins and notes that bear the Queen's portrait will continue to be issued for the remainder of the year or perhaps longer, after which the new portrait is understood to come into circulation.
Coins and notes bearing the Queen will not be recalled; instead, the process will be a gradual one and many coins marked with her portrait will remain in circulation for many years.
Passports
The wording in new passports will be changed. Her Majesty's Passport Office will become His Majesty's Passport Office, as is the case with HM Armed Forces and HM Prison Service.
Any older passports that do not have the new phrasing would be unaffected and not forced to change until they are renewed.
Like currency, the new passports will be phased in over time.
Charles will be addressed as Your Majesty rather than Your Royal Highness on first meeting, and Sir on second reference, instead of Ma'am - to rhyme with "lamb" - which was used on second reference to Elizabeth II.
National Anthem
The words to the National Anthem have changed to "God save our gracious King" with substitutions of "him" and "he". This is a matter of tradition, not law.
This version was last used when the Queen's father George VI was on the throne.
Cyphers
The new monarch will need a new Royal Cypher - the monogram impressed upon royal and state documents.
The Queen's ERII features on traditional police helmets and postboxes.
While English queens use the St Edward's crown, or a variant of it, kings traditionally use the more rounded Tudor crown.
Postboxes
Royal Mail postboxes are currently marked with ERII, which stands for Elizabeth Regina II. Now, they could change to CRIII.
When postboxes are made, they are given the mark of the monarch ruling at the time. It's estimated there are more than 100,000 postboxes around the United Kingdom, so it could take a long time to replace them all.
The Postal Museum notes that this will only happen when new postal boxes are added - old ones will not change.
QCs to KCs
The UK's leading barristers, who were previously known as Queen's Counsel, have now become King's Counsel.
The Barr Council, which represents barristers, said the change was immediate.
Barristers of that standing will not use the initials KC after their name instead of QC.
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