An 18ct gold and diamond bow brooch, by Cartier, the stylised single loop bow of textured and faceted finish, the diamond set tie with a line of seven claw set brilliant-cut diamonds, the reverse numbered and signed ‘Cartier Ltd Made in France 18k’, also stamped ‘JC’, with London import marks for 1968 and French assay mark to the pin, total diamond weight approximately 0.35 carats, length 4.5cm. £500-600