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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

ETA 2381

Features
automatic
sweep second
date

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 6.4mm
F= 1.6mm
T= 2.5mm
21/25 jewels
f = 18000 A/h

Balance staff U2202 / U2997
for balance with/without screws

Stem W2365

Mainspring / battery
Zf1244, 1.50 x 10.5 x 0.11 x 350mm

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
differences 2378, 2381 not known
assignment to different rotors unknown, e.g. single part (Fig.1) or separate sinter-metal weight (Fig.2)

family:
2370, 2372: manual wind
2373: manual wind, date
2375, 2379, 2380: automatic
2377: automatic, date, 13'''
2378, 2381: automatic, date
2354: manual wind, expecially for Wyler WH222 with an "ear" to catch the elastical balance

Example, year: signature; shock device
1) ca. 1955: Mulco, 21 Jewels; Incabloc
(ETA 2375)
2-3) ca. 1955: 98, AXZ, Benrus Watch Co Ltd, Model EG 1S5, Swiss - 66 5, Patented; Ruby-Shock
(Benrus EG 1S5, ETA 2375)

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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