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LeCoultre 478

manual wind
sweep second

12.75''', Dm=Do= 28.8mm
H= 4.55mm
15/16/17 jewels
f = 18000 A/h
power reserve 40h

Balance staff U877 (U1814, U2861)
Flume: 3 Wellen, Ronda: 4 Wellen, LeCoultre: keine Angaben

Stem W903

Mainspring / battery
1.28 x 11.5 x 0.13 x 420mm

1.30 x 0.80 x 0.22mm

Comments about the data

differences uncertain between 450, 468, 470, 478
options: Breguet hairspring, separate escape-wheel cock*, shock protection**, hack feature
(* 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.

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
1-3) 1941: 410258, Jaeger-LeCoultre; Parechoc
4) 1940: 370882, Jaeger-LeCoultre; Parechoc

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.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft

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