Tissot 20
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Manufactured from 1932 - 1938, constructed by Henri Gerber.
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Serial no: 648 447 (aprox: 1935).
Data: Tissot cal: 20
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15 jewels, manual winding.
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Size: 20 x 26 mm.
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H: = 4,20 mm.
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N: = 18000 A/h.
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Power reserve:
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