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Airain has a genuine vintage pedigree: in the 1950s it was among the small group of French houses (alongside Breguet, Dodane and Vixa) commissioned to supply the Type 20 flyback chronograph to the French military, and in 1962 it launched the original Sous-Marine dive watch. After decades of dormancy the name was revived by collector-led group CDMLEC (also behind Lebois & Co. and Fixoflex). The modern brand leans hard into historical accuracy, reissuing the Type 20/21 column-wheel flyback chronograph with a Swiss AMT hand-wound movement and the Sous-Marine diver with a La Joux-Perret automatic, in vintage-correct dimensions and finishing.