A cultured pearl necklace, by W. Drummond & Co., circa 1930, comprising fifty-seven pearls, measuring approximately 4.80 mm-7.30 mm, with pearl and diamond-set navette shaped plaque clasp, stamped W.D & Co. for W. Drummond & Co., diamonds weighing approximately 0.86 carat total, mounted in platinum and 18 carat white gold, length 37.0 cm