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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Doxa 3, 5.25''' (Felsa 55)

manual wind

5.5 x 8.75''', Dm=Do= 12.7 x 19.4mm
(four diagonally placed rests)
H= 3.15mm
F= 0.4mm
T= 1.5mm
17 jewels
f = 18000 A/h
power reserve 38h

Balance staff U691 (U53)

Stem W691 (W117

Mainspring / battery
Zf293, 0.95 x 7.0 x 0.08 x 220mm
(Zf323, 1.00 x 6.5 x 0.07 x 210mm)

1.00 x 0.55mm

Comments about the data

bimetallic screw balance
compared with Felsa 55 base plate shortened and four diagonally placed rests
As some registers mention same parts für Doxa 3 and Felsa 55, additionally the data for the Felsa 55 are mentioned in brackets

Example, year: signature; shock device
ca. 1930: Mido, 17 Jewels
(Mido 5.25''', Felsa 55)

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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