Data: Jaeger le Coultre, cal: 426/2
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16 jewels, back winding, hour and minute display.
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Size: 7''' 12.40 mm.
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H: = 2.90 mm.
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N: = 18.000 A/h.
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Power reserve:
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Main spring: 1,15 x 0,0575 - 150 mm.
Versions:
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426: combined barrel & train wheel bridge.
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426/2: redesign.