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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

ETA 2365

sweep second

7.75''', Dm= 17.2mm, Do= 17.5mm
H= 5.25mm
F= 1.0mm
T= 2.0mm
21/23/25 jewels
f = 18000 A/h
power reserve 38h

Balance staff U2224 / U3107
for balance with/without screws

Stem W2378

Mainspring / battery
Zf831, 1.30 x 7.0 x 0.08 x 220mm

1.20 x 0.70 x 0.20mm

Comments about the data

1964 change from fixed (Fig.1) to mobile (Fig.4) stud carrier
indirectly driven minute allows a big balance and low profile
differences 2365, 2366, 2368 not known

2360, 2361: manual wind
2363: manual wind, date
2365, 2366, 2368: automatic
237: automatic, 8.24'''
2369: automatic, date

Example, year: signature; shock device
1-3) ca. 1960: Marvin, 744, Swiss Made, 3 Adjs, 25 Jewels - Patented; Incabloc
4) 1964: 5917125, Chs. Tissot & Fils, Swiss, 21 Jewels - Patented; Incabloc

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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