New Zealand Royal NZ Air Froce Sweethearts Pin - Gold Plated Copper
A better example of a gold plated, and enamel, copper sweethearts badge to the Royal New Zealand Air Force - with Kings Crown.
I have not tested for gold, and it is marked 9c to back, but I think I can see copper through the polishing to the front upper edges of the wings, so am selling it as gold plate.
Hook, hinge and pin to back are in good order working order and there is no damage to enamel.
No maker mark other than the "9c".