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Bas 11/20/22 Bas 11/20/22

Early waterproof design: Alpina with the CH 207378 watch case

The watch featured is an Alpina with Cal. 490 in a rectangular steel watch case. This is the Taubert Patent (Brevet) CH 207378 that made an attempt to waterproof a rectangular wrist watch.

Also seen on Mido, Matthew Tissot and Patek Philippe wristwatches.