A marriage conversion that carries the spirit of 1920s IWC engineering: a high-grade Cal. 52T pocket movement housed in a contemporary 48 mm stainless steel wrist case with an exhibition back. The watch pairs a restored original dial and new mineral crystal with robust dimensions and a new leather 22 mm strap, balancing historic character and daily wearability. The Cal. 52T, finished with gold-plated bridges and a bimetallic balance, reflects IWC’s Probus Scafusia tradition of solid craftsmanship. For the collector who values mechanical authenticity and visible movement craft, this piece offers an immediate, tactile connection to early 20th-century watchmaking.