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 Fig. 1 | IWC 8531 Features automatic sweep second date Data 13''', Dm= 29.0mm H= 6.4mm 21 jewels f = 19800 A/h power reserve 44h Balance staff U2863 Stem W2269 Mainspring / battery 1.25 x 10.0 x 0.10mm Hands 1.40 x 0.80mm Comments about the data | Remarks 1958-1963, 55200 excenter winding mechanism adjustment screws on balance spokes Breguet hairspring Reed's regulator Example, year: signature; shock device 1962: 1654XXX, International Watch Co Swiss, C.853, Pat. Appl.; Incabloc (IWC 853) © J. zur Horst CHRONOMETRIE ZUR HORST Not for Sale! The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating. |
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