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View picture in original size
Fig. 1

Roseba 8

Features
manual wind
option: sub second

Data
10.5''', Dn= 23.69mm
1/15 jewels
f = 18000 A/h

Balance staff U1365 / U1394
pulse finger/pin

Stem W1133

Mainspring / battery
1.40 x 12.0 x 0.08mm

Hands
1.50 x 1.00mm

Comments about the data

Remarks
pin-lever escapement

family:
8 : 10.5''', option sub second
8B: 13.5''', option sub second
50: 10.5''', indirect sweep second
51: 11.5''', indirect sweep second
53: 10.5''', direct sweep second
54: 11.5''', direct sweep second
55: 10.5''', direct sweep second, date
55: 10.5''', no second, date

Example, year: signature; shock device
ca. 1980: Swiss Made, 1 Jewel

© R. van Rijn

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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