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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Durowe 522

Features
manual wind
sweep second

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.5mm
F= 1.2mm
T= 2.2mm
15/17/21 jewels
f = 18000 A/h
power reserve 37h

Balance staff U1559

Stem W1296 / W2899
(thread 1.1 / 0.9mm)

Mainspring / battery
Zf1041, 1.40 x 9.0 x 0.11 x 260mm

Hands
1.60 x 0.95 x 0.21mm

Comments about the data

Remarks
1950-
wheels beryllium bronze

family:
420, 421: 10.5''', manual wind, sub second
422: 10.5''', manual wind, sweep second
435: 10.5''', manual wind, sweep second, date
520: 11.5''', manual wind, sub second
522: 11.5''', manual wind, sweep second
552: 11.5''', automatic, sweep second

Example, year: signature; shock device
ca. 1955: - 5; Duro-Swing

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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