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View picture in original size
Fig. 1

Benrus BB4 (ETA 930)

Features
manual wind
sub second

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 3.5mm
F= 1.3mm
T= 1.7mm
7/15/17 jewels
f = 18000 A/h
power reserve 41h

Balance staff U1424

Stem W832, W1161

Mainspring / battery
Zf1269, 1.55 x 9.0 x 0.10 x 290mm

Hands
1.40 x 0.80 / 0.22mm

Comments about the data

Remarks
often signed as ETA 900

family:
BB4: 17 jewels
CE3, CE13: 17 jewels, day, date
CE4, CE14: 15 jewels, day, date
There are likely further variants

Example, year: signature; shock device
ca. 1950: AXZ, ETA 900, Benrus Watch Co Inc, Model CE 13, Swiss, 17 Jewels; Benrus (axial)
(Benrus CE13)

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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