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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Lorsa 237B

Features
manual wind
sub second

Data
10.5''', Dm= 23.3mm
H= 4.0mm
T= 2.0mm
15/17 jewels
f = 18000 A/h
power reserve 35h

Balance staff U1657

Stem W1111

Mainspring / battery
Zf1348, 1.65 x 9.0 x 0.10 x 290mm

Hands
1.40 x 0.70 / 0.20mm

Comments about the data

Remarks

family/generations:
manual wind:
236: sub second
237AT: sweep second
minor modifications base plate:
237B: sub second
237BC: sub second, date
237BT: sweep second
237BCT: sweep second, date
automatic:
237B(AUT): sub second
237BC(AUT): sub second, date
237BT(AUT): sweep second
237BCT(AUT): sweep second, date

Example, year: signature; shock device
ca. 1945: - Lorsa 237B

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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