King Charles' investiture crown as Prince of Wales underwent a radical refit for his investiture ceremony according to a royal expert who interviewed the coronet's designer. The crown was made with electro-magnetic plating which was revolutionary for the time and provided a modern twist to the historic occasion, but difficulting crafting a metal orb centre-piece reportedly resulted in a ping-pong ball being used instead. Ms English told Mail plus's Palace Confidential: "We mentioned heritage, did you know that the crown that Prince Charles was invested in 1969 was actually made out of a ping pong ball? "This is a true fun royal fact I interviewed the guy who made it. "They wanted it to be m ...