WW1 United We Stand Britain France Belgium Russia patriotic flag badge

A scarce original pre 1917 First World War period 'Duty Our Watchword patriotic lapel badge'; gilt example displaying the flags of Britain, France, Russia, Belgium inlaid in vibriant coloured enamels. Good condition, complete with original buttonhole lapel fitting, some minor enamel loss to Russian flag, gilt finish remains bright. Height approx 25mm.