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manual-wind chronograph, 60s, 30/45min, cam switched
13.75''', Dm= 31.0mm, Do= 31.5mm
f = 18000 A/h
power reserve 41h
Balance staff U1457 / U3137
balance with/without screws
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.
differences not known between 248, 348
248, 348: 13.75'''
187: 13.75''', date
Example, year: signature; shock device
ca. 1960: NO, Swiss; 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.
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