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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Durowe 445

Features
manual wind
sweep second

Data
10.5''', Dm= 23.3mm, Do= 23.7mm
H= 3.65mm
F= 1.0mm
T= 1.9mm
17/21 jewels
f = 18000 A/h
power reserve 36h

Balance staff U2243

Stem W2404 / W2875
thread 1.1mm/0.9mm

Mainspring / battery
Zf682, 1.20 x 9.5 x 0.105 x 300mm

Hands
1.30 x 0.80 x 0.22mm

Comments about the data

Remarks
1956-
except bridge shapes differences not known between 440, 445

family/generations:
10.5''':
440, 445: manual wind
443: manual wind, small date
11.5''':
540, 542: manual wind
570: automatic
580: automatic, small date
585: manual wind, normal date
590: automatic, normal date
suffix -1: ring balance, no regulator pointer

Example, year: signature; shock device
ca. 1956: G&W, L, 21 Jewels - 8; 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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