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View picture in original size
Fig. 1

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Fig. 2

View picture in original size
Fig. 3

ETA 2890

sweep second
hack feature

12.5''', Dm= 28.0mm, Do= 28.4mm
H= 3.6mm
(ball bearing +0.1mm)
F= 1.1mm
T= 1.5mm
21 jewels
f = 28800 A/h
power reserve 42h

Balance staff ETA 2890

Stem ETA 2890

Mainspring / battery
1.05 x 10.5 x 0.115 x 475mm

1.50 x 0.90 x 0.25mm

Comments about the data

due to low profile often used as base for modules with additional functions
In the base movement a section opposite to the stem was left free (Fig.3), into which the gear of the automatic module extends. So despite the service friendly modular design the total height could be kept low.

Example, year: signature; shock device
ca. 1980: Juvenia Mfg Swiss 11511, 17 Jewels - Patented; Incabloc
(Juvenia 11511, without second)

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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