Bush Radios salesmans promotional vintage badge circa 1950's

A very scarce original vintage 'Bush Radios salesman's promotional lapel badge'; brass example in the form of a Christmas tree in a red pot, inlaid with light green enamelling and carrying the trademark logo 'BUSH', the reverse impressed with early maker's details 'Toye & Co London'. Good condition, complete with original buttonhole lapel fitting, enamel defined crack across trunck of tree. Height 33mm.