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Fig. 1

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Fig. 2

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Fig. 4

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Fig. 6

ETA 2370

manual wind
sweep second

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.2mm
F= 1.2mm
T= 2.1mm
17 jewels
f = 18000 A/h
power reserve 46h

Balance staff U2202 / U2997
for balance with/without screws

Stem W2365

Mainspring / battery
Zf1247, 1.50 x 11.0 x 0.12 x 355mm

1.50 x 0.90 x 0.21mm

Comments about the data

option Triostat regulator:
unit with three adjustment features: precision adjustment for speed and regulator pin-width, as well as mobile stud carrier
differences 2370, 2372 not known,

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
1-2) ca. 1960: City, Swiss, 17 Jewels - Patented; Incabloc
3-6) ca. 1955: - DBK, Patented; Incabloc (Triostat)

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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