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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Dugena 1041 (Otero 481)

sweep second

11.5''', Dm= 25.6mm, Do= 26.0mm
rotor revolution circle D= 26.5mm
H= 7.1mm
(rotor hub +0.35mm)
F= 2.05mm
T= 2.75mm
25 jewels
f = 18000 A/h
power reserve 45h

Balance staff U2127

Stem W2308

Mainspring / battery
1.40 x 9.5 x 0.095mm

1.40 x 0.80 x 0.19mm

Comments about the data

jewel-bearing rotor
sophisticated excenter self-winding mechanism with just one gear stage (Fig.2, 3)
easy to operate rotor lock (Fig.4)
early samples: slip spring
late samples: fixed mainspring, friction clutch on pawl wheel

1040: 11.5''', automatic
1041: 11.5''', automatic, date
1159: 10.5''', manual wind, date
1162: 10.5''', manual wind
1163: 11.5''', manual wind, date

Example, year: signature; shock device
ca. 1955: Epora Automat, 25 Jewels; Monorex
(Otero 48)

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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