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View picture in original size
Fig. 1

Buser 25A

Features
manual wind
sub second

Data
10.5''', Dm= 23.3mm
15/17 jewels
f = 18000 A/h

Balance staff U2604

Stem W600

Mainspring / battery
Zf1313, 1.60 x 9.0 x 0.11 x 260mm

Hands
1.35 x 0.80mm

Comments about the data

Remarks
differences not known between 25A, 26A

family/generations:
25, 26: 10.5''', Shock-Resist or no shock protection
25A, 26A: 10.5''', Incabloc
25/115, 26/115: 11.5''', Shock-Resist or no shock protection
25A/115: 11.5''', Incabloc

Example, year: signature; shock device
ca. 1950: Buser 25/115, Buser Freres, Swiss, 17 Jewels; Shock-Resist
(Buser 25/115, 11.5''', Shock-Resist)

© P. Ilonen

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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