Cartier, a coral, onyx, chalcedony and diamond brooch, circa 1960, designed as a bust of a Beefeater

Cartier, a coral, onyx, chalcedony and diamond brooch, circa 1960, designed as a bust of a Beefeater in traditional garb, his head and shoulders of carved coral, his hat of carved onyx set with brilliant-cut diamonds, his ruff collar of white chalcedony, holding a spear, mounted in gold, length 4.5cm, signed Cartier Paris, numbered 011646, maker's mark for Cartier