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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 2551R

Features
automatic
sweep second
date: set by changing 21:20-24h

Data
7.75''', Dm= 17.2mm, Do= 17.5mm
H= 4.65mm
F= 1.05mm
T= 1.65mm
17/23 jewels
f = 21600 A/h
power reserve 42h

Balance staff U3220

Stem W3151

Mainspring / battery
1.30 x 7.0 x 0.08mm

Hands
1.20 x 0.70 x 0.20mm

Comments about the data

Remarks
1965-1972

family:
2540, 2544: manual wind
2541, 2545: manual wind, date
2550: automatic
2551: automatic, date
suffix R: ball-bearing rotor (not in signature)

Example, year: signature; shock device
1-3) ca. 1965: Zodiac Ltd, 46-47, Swiss, 17 Jewels - Patented; Incabloc
(Zodiac 47, ETA 2551R)
4) ca. 1970: Swiss; Incabloc
(standard rotor shape)

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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