A bi-coloured automatic 'Santos' wristwatch, by Cartier

A bi-coloured automatic 'Santos' wristwatch, by Cartier
The square silvered dial to gilt hands with date aperture at 3 o'clock and sweep centre seconds, the stepped bi-coloured bezel secured by eight screws, to a matching bracelet and deployant clasp, case 2.8cm wide, in maker's pouch
Dial, case and buckle signed Cartier