Bracelets : GOLD, AMETHYST AND ENAMEL HINGED BRACELET, JOHN BROGDEN, 1870s | lot | Sotheby&#… 3 June 2018 3103 Bracelets Collection 2018 : GOLD, AMETHYST AND ENAMEL HINGED BRACELET, JOHN BROGDEN, 1870s | lot | Sotheby's