WW1 Royal Flying Corps gold and enamel RFC sweetheart brooch

A sarce original First World War period 'Royal Flying Corps' gold and enamel sweetheart brooch, the reverse with an applied tablet impressed '9ct' (9 carat gold). Good condition, complete with original pin fittings, hook an old brass replacement, no damage to the enamel, minor service wear.Size approx 51 x 17mm.