Bristol Siddeley aircraft engines 1959 twenty year service badge

A scarce original circa 1956 aircraft engine manufacturer 'Bristol Siddeley twenty year service badge' the reverse impressed with Birmingham silver hallmarks for 1959, maker's details 'F&S' (Fattorini & Sons) and personally engraved 'A170'. Very good condition, complete with original screw post fixing and silver nut with hallmark, enamel perfect.
Width 29mm.
Height 13mm.

Code: 60825