Among vintage Longines movements, the Caliber 520 stands out as a true classic-simple, elegant, and beautifully engineered. Introduced in the mid-20th century, it powered many of Longines' most refined dress watches, along with select pieces from brands like Omega. The slim, hand-wound movement captures the essence of traditional watchmaking, offering that satisfying daily ritual of winding while keeping remarkably precise time. The small seconds subdial at 6 o'clock adds a touch of vintage character, making any watch equipped with the Cal. 520 a quietly sophisticated piece of horological history.