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 Fig. 1  Fig. 2  Fig. 3 | Alpina 18'''H6.3 hunter Features stem wind and set sub second Data 18''', Dm= 40.05mm, Do= 40.8mm H= 6.3mm F= 0.7mm T= 2.2mm 15/16 jewels f = 18000 A/h power-reserve 34h Mainspring / battery Zf3641, 2.20 x 16.0 x 0.20 x 460mm Hands 1.80 x 1.02 / 0.30mm Comments about the data | Remarks open face calibre bimetallic screw balance Breguet hairspring lever and escape wheel anodized aluminium Option: Reed's regulator (Fig.3) early two-section regulator for coarse and fine adjustment (Fig.3) steel bearing for stem (cf. Alpina 18'''H6.3 open-face) two-part crown wheel with big bearing (cf. Alpina 18'''H6.3 open-face) This detail is easy to recognise, because the crown-wheel screw head rotates during winding. This screw is as else common left handed Attention: The ratchet-wheel screw is also left handed ebauche or even finished movement from Recta family: The variants of open face and hunter with 18''' and 19''' have only base plates with different diameters. Example, year: signature; shock device ca. 1915: UH (Union Horlogère) - 55 (Alpina 19'''H6.3 hunter) 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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