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View picture in original size
Fig. 1

Durowe 7410/2 (INT)

manual wind
sweep second

10.5''', Dm= 23.3mm, Do= 23.7mm
H= 3.8mm
F= 1.1mm
T= 1.9mm
17 jewels
f = 21600 A/h
power reserve 42h

Balance staff U3224

Stem W3278

Mainspring / battery
Zf869, 1.30 x 9.5 x 0.105 x 300mm

1.50 x 0.90 x 0.21mm

Comments about the data


10.5''' manual wind:
7410: -
7411: 24h hand
7412: date
11.5''' manual/automatic respectively:
7420/7520: -
7421/7521: 24h hand
7422/7522: date
7423/7523: day, date
7424/7524: minute stop feature
7425/7525: date quickset
7426/7526: day, date quickset
7427/7527: day at 9h, date quickset
7428/7528: date, month calendar, quickset
- /7539: date, digital
7430...7438 like 7420...7428, but jumping second
7530...7538 like 7520...7528, but jumping second
suffix /1: modification quickset date
suffix /2: minor modifications
suffix /3: modification click spring

Example, year: signature; shock device
ca. 1975: INT, 7412/2, 21600, ZentRa, 17 Jewels; Rufa-Anti-Shock
(Durowe 7412/2)

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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