Movement Caliber: 601

showcases a Roman numeral dial that enhances its vintage charm

Reference: Unknown

this Sporto hails from the rugged 1950s line Zenith couldn’t even sell in the US due to a trademark clash with Zenith Radio—making vintage Sportos notably scarce there today

1940s Roamer Chronograph Jumbo | Ref. 2403 | Valjoux 22 | Serviced blue steel hands Movement Caliber: 601You save 369,00 EUR right away The service and identification document is included in the price. Collector Notes & Dating This Roamer Chronograph from the 1940s is a remarkable example of mid century horology, driven by the legendary Valjoux 22 caliber. The Valjoux 22 is a significant movement in watchmaking history, known for its robust column wheel construction and large 14 ligne architecture, which served as the foundation for chronographs from top