Pink Pages
for Timepieces
All Items
Ranfft Items
Brand Shops
Commit an Item
How to do right
Condition of Watches
About Watches
  Help   Log In  Register, Clients   Deutsch  English  EUR  US$  CHF  UKŁ 
 Index  Timepiece Archive, Categories  Archive: Watch Movements    Timepiece Market 
View picture in original size
Fig. 1

View picture in original size
Fig. 2

Dugena 556 (Osco 52)

manual wind
sweep second

8.75 x 10''', Dm=Do= 20.05 x 22.5mm
rests on corners to fit cases for round 10.5''' movements, Dm=23.3mm
H= 5.0mm
F= 0.8mm
T= 2.1mm
317 jewels
f = 18000 A/h
power-reserve 33h

Balance staff U1636

Stem W1125

Mainspring / battery
Zf1389, 1.7 x 9.0 x 0.10 x 290mm

1.40/1.45 x 0.90 x 0.18mm

Comments about the data

designation 556 applied for two different calibres
ratchet on dial side, crown mechanism with rocker bar

553: sub second
556: sweep second

Example, year: signature; shock device
ca. 1945: 1, Osco, Kal.52, Parat - 11; Monorex
(Osco 52, 17 jewels)

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

bidfun home
...the alternative - free of charge!
Dr. Roland Ranfft
Erkelenzer Str. 98
41844 Wegberg
phone +49 (0)2434 6034670

email: info@ranfft.de