gracias P.G. no acertaba a visualizar el primer número.
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Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
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ETA 2789[/SIZE]
Features
automatic
sweep second
day: quickset
date: quickset
optional hack feature
Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.9mm
(two-part dial spacer +0.1mm, Fig.5)
F= 2.05mm
T= 2.6mm
17/25 jewels
f = 21600 A/h
power reserve 47h
Balance staff U3337
Stem W3394
Mainspring / battery
1.45 x 10.5 x 0.12 x 368mm
Hands
1.50 x 0.90 x 0.25mm
Comments about the data[/TD]
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Remarks
1969-1976, >25000000 (all automatics of the family)
first calibre with quickset day and date
family/generations:
manual / automatic respectively
21600 A/h:
2750 / 2770, 2776: no date
2752 / 2772: date
2753 / 2773: date, precision regulator
2758 / 2778: day, date
2759 / 2779: day, date, precision regulator
2761 / 2781: quick set date, high
2762 / 2782: quick set date
2763 / 2783: quick set date
2763-F6 / 2783-F6: quick set date, digital
2768 / 2788: day, quick set date
2769 / 2789: quick set day and date
2769-1 / 2789-1: quick set day and date, double-language
28800 A/h:
2751 / 2771: no date
2754 / 2774: date
2760 / 2780: day, date
2764 / 2784: quick set date
- / 2790 : quick set day and date
- / 2790-1: quick set day and date, double-language
- / 2791: quick set date, high
Example, year: signature; shock device
1-3) ca. 1970: UT, 25 Jewels, Swiss Made - Patented; Incabloc
4-5) ca. 1975: F5, Dugena 3338, Swiss Made, 25 Jewels - Patented; Incabloc
6) ca. 1970: Palmer Sales Corp, Swiss, Calibre ETA 2789, 17 Jewels - Patented; Incabloc[/TD]
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