De Havilland Aircraft Company production workers silver badge dated 1939

A scarce original 'De Havilland Aircraft Company production workers small silver lapel badge' in the form of the companies logo, an aircraft fighter plane with blue enamel 'D' and 'H' superimposed over each wing, with 1939 below, the reverse impressed 'Silver'. Very good condition, complete with original buttonhole horseshoe style fitting, no damage to the enamel. Height 17mm. Width 25mm.