Canadian CEF 78th Infantry Bn Winnipeg Grenadiers silver sweetheart brooch

A scarce original First World War 1918 period British made 'Canadian Expeditionary Force 'CEF 78th Infantry Battalion Winnipeg Grenadiers silver and enamel pin badge'; the reverse impressed with Birmingham silver hallmarks for 1918 and maker's details 'G.A & S'. Very good condition, complete with original pin fittings, enamel with graze to the number '78' otherwise perfect. Height 30mm.