A lady's Art Deco, diamond and calibré sapphire wristwatch, with calibré sapphire bezel and diamond palmette shoulders, the movement inscribed 'Seventeen Jewels ADJ 2 Temp and 9 Positions', signed 'Audemars Piguet & Co.', the platinum case foliate engraved, the reverse with initials 'MGS', to black moiré straps.