2x St. Edward's Crown rank badgesCoronation Crowns (? Date)
 
A crown is a symbolic form of headgear worn by a monarch or by a god, for whom the crown is traditionally one of the symbols of legitimacy
 
In the British Empire, and later the British Commonwealth (in any country or colony that recognises the British Sovereign as Head of State, including British Dominions, Colonies, Protectorates, Protected and Associated States, Mandated and Trust Territories) the Crown is much more than some jewels and precious metal and it is much more than just the King (or Queen as the case may be.
 
Pair of St. Edward's Crown rank badges used during the reign of Elizabeth the First, Victoria, Edward VII and Elizabeth II. The "coronation crown".