The new cypher is formed of a 3D printed element created from the official 2D cypher design supplied by Historic Royal Palaces. An epoxy resin relief was formed from a silicone mould and vapour blasted to a key finish before painting. The signage was painted in several single tones and finished with 23.5 carat gold leaf. After fully curing, the gilding was burnished, and Palladium leaf used for any silver areas.
The design of the King’s cypher marks a shift away from the instantly recognisable symbol of the St Edward’s Crown used by Queen Elizabeth II. The design was chosen personally by King Charles III from a range of designers produced by the College of Arms. It is similar to the cypher of his grandfather King George VI and features the Tudor Crown.