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 Fig. 1  Fig. 2 | IWC 66 19'''H6 Features stem wind and lever set sub second Data 19''', Dm= 41.9mm, Do= 43.15mm H= 6.0mm (winding gear +0.2mm) 15 jewels f = 18000 A/h power reserve 30h Balance staff U1447 Stem W1724 Mainspring / battery 2.05 x 0.20mm Comments about the data | Remarks 1909-1919, 7800 hunter calibre bimetallic screw balance with 4 adjustment screws Breguet hairspring patented big bearings for crown- and ratchet wheel barrel with Geneva stopwork details cf. IWC 52 19'''H5 Swiss Patent 31457: filed 05-11-1904, Fabrique d'Horlogerie de J. Rauschenbach (CH) crown- and ratchet wheel with top- and bottom part, kept together with three screws each Swiss Patent 55231: filed 03-28-1911, Uhrenfabrik von J. Rauschenbach (CH) dial fitting after push-button principle Example, year: signature; shock device 1917: 659251, H6, +55231 - IWC Probus Scafusia, +31457 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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