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Fig. 3

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Fig. 4

ETA 2784

Features
automatic
sweep second
date: quickset
hack feature

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.2mm
F= 1.45mm
T= 2.0mm
17/25 jewels
f = 28800 A/h
power reserve 45h

Balance staff U3531

Stem W3394

Mainspring / battery
1.45 x 10.5 x 0.13 x 380mm

Hands
1.50 x 0.90 x 0.25mm

Comments about the data

Remarks
1971-1978, 645812

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
2768 / 2788: day, quick set date
2769 / 2789: quick set day and date
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
- / 2791: quick set date, high

Example, year: signature; shock device
1-3) 1973: Mido, Swiss, 17 Jewels - Patented; Incabloc
4) ca. 1975: Swiss Made, 17 Jewels; 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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