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 Fig. 1 | LeCoultre 450 Features manual wind sweep second Data 12.75''', Dm=Do= 28.8mm H= 4.55mm 15/16/17 jewels f = 18000 A/h power reserve 40h Balance staff U1814 (U877, U2861) Flume: 3 Wellen, Ronda: 4 Wellen, LeCoultre: keine Angaben Stem W903 Mainspring / battery 1.28 x 11.5 x 0.13 x 420mm Hands 1.30 x 0.80 x 0.22mm Comments about the data | Remarks differences uncertain between 450, 468, 470, 478 options: Breguet hairspring**, separate escape-wheel cock**, shock protection** (* scarcely or never, ** often or always) Assignment troubles: Flume lists 3 balance staffs assigned to calibres, Ronda lists 4 staffs for all calibres, LeCoultre data sheets mention no differences. Calibres specified in data sheet with shock protection are occasionally met without. Calibres specified in data sheet with optional shock protection are never met without. family/generations: 449, 452, 463, 469, 479: sub second 450, 468, 470, 478: sweep second 451, 464, 484: sub second, calendar 488: sweep second, hack feature 494: sub second, calendar, moon phase Example, year: signature; shock device 1942: 429395, Jaeger-LeCoultre, Swiss; Parechoc © 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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