Royal Arsenal Ordnance Factory coffee stalls voluntary service 1919 tribute medal

A rare original circa 1919 end of Great War thribute mrdal badge; gilded brass example in the form of a shield, inlaid with blue enamel bearing 'OF' monogram and the dates '1915 -1919', from which hangs three conjoined bar scrolls inscribed 'Royal Arsenal Coffee Stalls Voluntary Service', the reverse of each impressed with maker's details 'J.R.Gaunt London'. Very good condition, complete with original pin fittings, enamel intact. Height 46mm.