The Rolex Bubble Back ref. 3372 exemplifies the brand's forward-thinking innovation. As one of the first truly waterproof automatic watches, it features a screw-down crown and case back, ensuring superior water resistance.

With a 32mm case diameter and a substantial 15mm thickness, the watch's proportions are one of the reasons behind its nickname "Bubble Back." The thickness of the case is due to the large rotor of the self-winding movement, which required extra space, creating the distinct "bubble" shape on the case back.

This particular model, produced in the 1930s, is further distinguished by its original threaded "machine" bezel design. It houses the reliable 9''' 3/4 caliber and boasts a dial with an untouched lemon patina, a sign of its age yet preserved in exceptional condition. The small Roman numerals and blued steel baton hands add a refined, timeless elegance.

Authentic Rolex signatures on the dial, crown, case, and movement confirm the integrity and originality of this timepiece.

The case remains in exceptional, likely unpolished condition, a rare find for a watch of its age. Paired with a vintage hippopotamus leather strap, this historical piece carries a sense of unmatched character and heritage.

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