This piece centres on an IWC Schaffhausen finger-bridge pocket-watch movement, Cal. 73, dating to circa 1931 and shown here as a wristwatch conversion. The movement’s original architecture and finishing reflect IWC’s early 20th-century watchmaking approach, now presented in a later wrist case with dial and hands carried over. For the discerning collector, such a conversion offers a tangible connection to historical mechanics and craftsmanship: a well-documented vintage movement rebuilt for contemporary wear, illustrating both period engineering and the practical adaptation of pocket-watch calibres for modern wrists.