Mabmac, that message never got to the RAF, or if it did was forgotten. Some 8 years after the Coronation we had the Tudor crowns and very smart they were. Then a couple of years on a new button was introduced. This was an identical design but a bigger button known as the high dome. Contrary to previous rule that change only took place on replacement, we were told to change out buttons. No 1s you could do yourself, 7 buttons per tunic, but great coats was a tailors job. There was no allowance for a button change.