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  • Mach Watch Concorde Gmt Valjoux 7754 2in1 V2 C

    Collection Mach Watch, Model Concorde AirSpeed ® GMT ETA-Valjoux 7754, 2in1 silver and black, limited version Unfortunately, very little information is known, I had to adjust to the functions of the Valjoux movement. To make the time easier to read and stopwatch sec function, I added an additional 12h index (Tap = 1). The sub […]