Rolex 300

A simple and reliable manual-wind movement from the mid-20th century, typically found in Rolex’s elegant “Precision” and ladies’ dress watch lines. Prioritizing a slim profile, this caliber operated at a steady 21,600 bph and was not part of the Oyster Perpetual family. It represents Rolex’s tradition of crafting quality, time-only movements where simplicity and elegance were key.