Model: Type XX Aeronavale Flyback Chronograph. Functions: hours, minutes, seconds, chronograph, flyback function. Dial: black, with Breguet-style Arabic indexes treated with luminescent material, syringe hands, also luminescent, continuous seconds at 9, chrono minutes at 3, chrono hours at 6, chronograph seconds in the center, sextensimal scale, Breguet logo at 12.
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