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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

FEF 108

manual wind
sub second

10.5''', Dm= 23.3mm, D0= 23.7mm
H= 4.0mm
F= 0.5mm
T= 1.9mm
15 jewels
f = 18000 A/h
power reserve 39h

Balance staff U142

Stem W151

Mainspring / battery
Zf1309, 1.60 x 9.0 x 0.10 x 290mm

1.22...1.30 x 0.80 / 0.18mm

Comments about the data

differences not known between 70...85, 87...89, 100...109
likely catalog numbers for varying bridge- and plate details

Example, year: signature; shock device
1-2) ca. 1920: Swiss Made, 15 Jewels - FEF
(FEF 70)
3-4) ca. 1940: 7, Henry Moser & Co.
(FEF 70)

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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