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Fig. 1

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Fig. 2

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Fig. 3

Eterna 12671-1 (ETA 2671)

Features
automatic
sweep second
date: quickset
hack feature

Data
7.75''', Dm= 17.2mm, Do= 17.5mm
H= 4.8mm
F= 1.15mm
T= 1.75mm
25 jewels
f = 28800 A/h
power reserve 39h

Balance staff U3519

Stem W3418

Mainspring / battery
1.32 x 6.5 x 0.077 x 290mm

Hands
1.20 x 0.70 x 0.20mm

Comments about the data

Remarks
1970-
temporary or optionally micrometer regulator (cf. Eterna 12660)

family:
12660: manual wind
12661: manual wind, date
12668: manual wind, day, date
12670: automatic
12671: automatic, date
12678: automatic, day, date
suffix -1: meaning unknown
suffix B: no second

Example, year: signature; shock device
ca. 1975: Eterna-Matic, Swiss, Brevet, 25 Jewels - Patented; Kif-Ultraflex

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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