A pair of sapphire and enamel cufflinks, early 20th century, composite, the fronts of circular

A pair of sapphire and enamel cufflinks, early 20th century, composite, the fronts of circular outline set with cabochon sapphires and accented with borders of white enamel, to tonneau-shaped back links, connected by chain, mounted in 18ct gold, fronts 1.4cm diameter each, French assay marks, French sponsor's marks and British hallmarks for 18ct gold