From 1918 comes a jumbo IWC Schaffhausen pocket watch movement, a workpiece of early 20th-century watchmaking. Its Cal. 52 architecture reflects the scale and mechanical clarity prized in pocket calibres of the era, with proportions suited to conversion into a wristwatch if desired. IWC’s long tradition of movement manufacture is evident in the thoughtful construction and finishing typical of their period pieces. For the contemporary collector, such a movement offers a direct tactile link to classical horological practice and an authentic mechanical heart for a marriage or bespoke timepiece project.