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Fig. 1

Landeron 159

manual-wind chronograph, 60s, 30/45min, cam switched
sub second
date hand at 6h

13.75''', Dm= 31.0mm, Do= 31.5mm
17 jewels
f = 18000 A/h
power reserve 41h

Balance staff U1457 / U3137
balance with/without screws

Stem W1158

Mainspring / battery
Zf978, 1.35 x 12.0 x 0.14 x 360mm

1.85 x 1.30 x 0.25 / 0.27 x 0.20mm

Comments about the data

1937-1970, >3.500.000 (all derivatives based on Landeron 48)
There were various chrono mechanisms. And as their parts often were interchangable, occasionally series were produced with parts of different calibres.

51, 151: 13.75'''
55: 14'''
57: 14''', calendar
59: 13.75''', calendar
80, 180: 13.75''', calendar, new pusher layout
81, 181: 13.75''', calendar, moon phase
82: 13.75''', date at 6h
159: 13.75''', date hand at 6h

Example, year: signature; shock device
ca. 1950: Levrette Watch Co, Swiss, 17 Jewels
(Landeron 151)

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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