Royal Air Force sterling silver sweetheart brooch in form of wishbone

World War Two era Royal Air Force sterling silver sweetheart brooch in the form of a wishbone with the traditional pilot wings attached to the front.
Due to the small size of the wings, they are not as detailed as some, but still feature a central wreath with bow at bottom and the letters 'RAF' inside, surmounted by a King's crown.
On the reverse, the maker's mark 'WBs' and the words 'Sterling Silver' are impressed onto one side of the wishbone and there is a metal pin clasp for attachment.