An early 20th century sapphire and diamond cocktail watch, the square dial with Arabic numerals, within diamond set bezel with sapphire highlights (sapphires untested for natural versus synthetic origin), the case stamped ‘platinum’, with blue cabochon set winder, between hinged shoulders, pierced decorated with bow detail, and diamond set barrel terminals, to later 9ct white gold twin mesh cord bracelet strap, with diamond detail, (one diamond missing), length 15.8cm . £1,500-£2,000