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| Index | Timepiece Archive, Categories | Archive: Watch Movements | Timepiece Market |
 Fig. 1  Fig. 2 | Cortebert 540 Features stem wind and set sub second Data 19''', Dm= 41.85mm, Do= 43.15mm H= 5.6mm F= 0.45mm T= 2.3mm 15 jewels f = 18000 A/h power reserve 34h Balance staff U972 Stem W1471 Mainspring / battery Zf3576, 2.10 x 16.5 x 0.21 x 470mm Hands 1.85 x 1.10 / 0.27mm Comments about the data | Remarks open face calibre Breguet hairspring early samples with bimetallic screw balance except varying bridge layouts no differences known between 526, 534, 540, 548 family: bigger barrel: 526, 534, 540, 548: open face, 19''' 527, 535, 541: hunter, 19''' smaller barrel: 528, 536: open face, 19''' 529, 537: hunter, 19''' 530-532, 542: open face, 18''' Suffix S: Chronometer Example, year: signature; shock device ca. 1920: 596, Tellus, Chronometer, 540S - 3001596 (Cortebert 540S) 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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