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View picture in original size
Fig. 1

EB 8381

manual wind
sweep second

10.5''', Dm= 23.3mm
H= 3.9mm
1/5/17 jewels
f = 18000 A/h
power reserve 45h

Balance staff U3110

Stem W3069

Mainspring / battery
1.50 x 10.0 x 0.12mm

1.50 x 0.70 x 0.18mm

Comments about the data

pin-lever escapement

family, generations:
8370: no second
8374: no second, date
8376: no second, day, date
8381: sweep second
8385: sweep second, date
8387: sweep second, day, date
8371: sub second, option: chronograph
8391: sweep second
8395: sweep second, date
8397: sweep second, day, date
8399: sweep second, skeletonized
extensions -66, -67 designate minor modifications and their year of introduction
Not all variants were actually made. Only those are listed, which are actually known or contained in current registers.

Example, year: signature; shock device
ca. 1970: Swiss, 1 Jewel
(EB 8381-67)

© J. Welz, Real-mint-Watches

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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