500 Pounds - Charles III Life and legacy of the Queen, Gold Piedfort

Issued in the months immediately following Elizabeth II's death in September 2022, this piedfort was among the first wave of commemorative strikes authorized under Charles III — meaning the obverse carries his effigy on a coin nominally honoring his mother. That duality was deliberate policy, not accident; the Royal Mint had prepared multiple denominations in advance, awaiting the inevitable.

At 312.59 grams of .9999 fine gold, the piedfort format — double the thickness of a standard coin — originated as a medieval proofing technique used by mint masters to verify die quality before full production runs.