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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Durowe 422

manual wind
sweep second

10.5''', Dm= 23.35mm, Do= 23.7mm
H= 4.5mm
F= 1.1mm
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

1.60 x 0.95 x 0.21mm

Comments about the data

wheels beryllium bronze
to wide extent equal to Enicar 410, likely taken over from Enicar

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
1-2) ca. 1950: 17, S, Laco, 17 Jewels - Durowe 422; Durobloc
3-4) ca. 1955: 45, E, Laco, 17 Jewels - Durowe 422, 3; 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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