Rolex Prince 3937

The Rolex Prince ref. 3937 is one of the iconic rectangular models introduced during the 1930s, designed with an emphasis on legibility and chronometric precision. This reference is part of the original Prince line, often nicknamed the ‘Doctor’s Watch’ because of its dual-dial layout, which allowed physicians to easily time pulses using the large subsidiary seconds display. The 3937 features a rectangular case measuring approximately 28 mm in width and 42 mm in length, crafted in either sterling silver or 18k gold depending on the variant. It houses the Rolex Caliber 300, a manually wound movement developed for high precision and a 42-hour power reserve. The dial is typically two-tone with a central hour and minute section and a large separate seconds register at the 6 o’clock position, often marked with a contrasting railway minute track and stylized Arabic numerals. Its case profile, sharp edges, and elegant stepped bezel make it highly distinctive. The 3937 remains one of the most collectible references in the Rolex Prince lineage, prized for its historical significance, elegant Art Deco styling, and association with Rolex’s early focus on wristwatch chronometry.