1940s Rolex Oyster Perpetual Chronometer Bubble Back 14k Yellow Gold Arabic dial 3131

The 1940s Rolex Oyster Perpetual Chronometer reference 3131, known as a “Bubble Back,” is a quintessential early automatic Rolex that helped define the brand’s reputation for precision and innovation. Cased in 14k yellow gold, it carries a warm vintage presence, enhanced by the signature rounded, protruding caseback designed to house Rolex’s thicker self-winding movement.

There was a time when the early Bubblebacks were the hottest Rolex watches on the planet, with collectors paying huge sums for these small yet perfectly formed Oysters—and in recent years, interest in these mighty yet diminutive watches has returned in force. This example remains in outstanding condition, retaining its all-original dial designated “CHRONOMETER” with beautifully preserved painted radium Arabic numerals and central seconds hand.

The dial’s originality is particularly important, as even the pencil hands still contain their radium lume, while the screw-down crown is the correct Brevet “+” style. With its strong case, historically significant chronometer-certified movement, and rare, untouched details, this ref. 3131 stands as both a technical milestone and a charming reminder of why Bubblebacks were once—and are again—among the most collectible Rolex watches in the world.

All our watches are thoroughly inspected by our expert watchmaker and come with a 3 months guarantee. However, since this particular piece has been fully serviced, it includes a 1-year mechanical guarantee.