Platinum self-winding tonneau-shaped gentleman’s wristwatch with one horological complication: World Time (outer revolving time zone disc with the name of 24 cities and hour-hand adjustable with the rectangular push-piece at 10 o’clock). Silver colour and polychrome cloisonné enamel dial showing the Earth vow from the North Pole.

Ref Variations: 5131, 5131P, 5131j-001, 5131-014,