This pocket-watch conversion houses Longines’ Caliber 19.74N from circa 1928, a product of the brand’s Grand Prix era. The original enamel dial with period-correct gilded hands sits under a new mineral crystal, while a custom stainless steel case with an exhibition back presents the movement on the wrist. The manual-wind 19.74N (serial 478••••) demonstrates early 20th-century watchmaking calibre architecture and finishing. For a collector seeking the presence of a historic pocket movement rendered wearable, this conversion offers an elegant way to experience Longines’ vintage mechanics and dial artistry today.