Great Western Railway Centre St John Ambulance Association GWR pin badge

A good original circa 1930's nickel plated badge; circular example surmounted by the 'London, Midland and Scottish Railway' heraldic company crest, a wing on torse bearing cross within circular backing, the centre depicting the St. John Ambulance Maltese Cross logo with title surround 'The St. John Ambulance Association Great Western Railway Centre'; the reverse impressed with early maker's details 'FATTORINI & SONS LTD BRADFORD HOUSE BIRMINGHAM' an address format used between circa 1928 and 1932. Very good condition, complete with original pin fittings.Height approx 35mm.