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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Landeron 48

Features
manual-wind chronograph, 60s, 30/45min, cam switched
sub second

Data
13.75''', Dm= 31.0mm, Do= 31.5mm
H= 6.2mm
F= 0.6mm
T= 1.6mm
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

Hands
1.85 x 1.30 x 0.25 / 0.27 x 0.20mm

Comments about the data

Remarks
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.

family:
48: 13.75'''
54: 14'''
56: 14''', calendar
58: 13.75''', calendar

Example, year: signature; shock device
ca. 1955: Swiss Made, 17 Jewels; Incabloc

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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