Antique Art Deco Mother of Pearl Cufflinks Dress-Set

An Art Deco gentlemen’s dress-set, with cabochon-cut sapphire to the centre with a border of mother-of-pearl and blue enamel and gold surrounds. The set consists of a pair of cufflinks, three collar studs, and six buttons. Mounted in gold. The fittings have French eagle marks, Brevete, S.G.D.G. in a C. Fredenhagen box.  Circa 1925