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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2 | AHS 44 Features manual wind Data 10.5''', Dm= 23.7mm, Do= 24.35mm H= 4.3mm F= 0.55mm T= 2.1mm 0 jewels f = 18000 A/h power-reserve 37h Balance staff U1428 / U2607 (staff with slot D= 0,6mm / 0,55mm) U2512 (single roller) U3118 (double roller) Stem W2238 Mainspring / battery Zf1391, 1.70 x 9.0 x 0.12 x 240mm Hands 1.42 x 0.80mm Comments about the data | Remarks pin-lever escapement ratchet on dial side, crown mechanism with rocker bar balance versions: staff with slot, single roller, double roller The distance between balance bearings is adjusted either by the common screwed point bearing on the dial side (Fig.2), or more sensitive and service-friendly by a screw bending the balance cock or -bridge (cf. AHS 42). Late samples have a balance bridge instead of a cock, and are signed on the dial side as AHS 42. It is not yet known, which variants were made with this layout. Often a wrong or no calibre signature is present. family: 40: sub second, pointed staff 41: sub second, pivoted staff 42: sweep second, pointed staff 42(CLD): sweep second, date, pointed staff 43: sweep second, pivoted staff 43(CLD): sweep second, date, pivoted staff 44: no second, pointed staff 45: sub second, jewelled pointed staff 46: sweep second, jewelled pointed staff 47: no second, jewelled pointed staff 54: no second, date, pointed staff 56: sweep second, date, jewelled pointed staff Example, year: signature; shock device ca. 1965: 184 (AHS 40) 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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