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| Pierce 861(AUT) Features linear automatic no manual wind sub second Data 11.75''', Do= 26.7mm, H= 5.1mm including space for the moving weight, base movement: Do=Dm= 19.4mm 15 jewels f = 18000 A/h | Remarks 1933- automatic with linearly sliding weight Through the aperture in the automatic bridge the movement can be wound with a special key for service purpose. later samples with beveled base plate and no separate slide bearing on the balance cock Example, year: signature; shock device ca. 1940: Automatic, Made in Switzerland, 15 Jewels; Incabloc manually added: Max Landau Co, Unadjusted, Fifteen |
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