St Edward's Crown in the context of "Guinness World Records"

A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, particularly in Commonwealth countries, as an abstract name for the monarchy itself (and, by extension, the state of which said monarch is head) as distinct from the individual who inhabits it (that is, The Crown). A specific type of crown (or coronet for lower ranks of peerage) is employed in heraldry under strict rules. Indeed, some monarchies never had a physical crown, just a heraldic representation, as in the constitutional kingdom of Belgium.

Colonel (Col) is a rank of the British Army and Royal Marines, ranking below brigadier, and above lieutenant colonel. British colonels are not usually field commanders; typically they serve as staff officers between field commands at battalion and brigade level. The insignia is two diamond-shaped pips (properly called "Bath Stars") below a crown. The crown has varied in the past with different monarchs; Elizabeth II's reign used St Edward's Crown. The rank is equivalent to captain in the Royal Navy and group captain in the Royal Air Force.