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View picture in original size
Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

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Fig. 5

Dugena 1320 (Buren 1320)

Features
automatic
sweep second

Data
12.5''', Dm= 28.15mm, Do= 28.5mm
H= 2.85mm
(rotor +0.35mm)
F= 1.1mm
T= 1.4mm
17/30 jewels
f = 19800 A/h
power reserve 54h

Balance staff U3085

Stem W3060

Mainspring / battery
1.0 x 9.5 x 0.10mm

Hands
1.40 x 0.80 x 0.18mm

Comments about the data

Remarks
1962-1967
micro rotor, double jewel bearing if 30 jewels
double excenter regulator for curb pins and stud carrier
selfwinding gear with direction switching by a pinion floating between two huge jewels (Fig.5)
indirectly driven minute and second allow a low profile
Details in Fig.4: The coupling between excentric cannon pinion A and free-running center pinion B is made free from play by pressing the hour wheel C against both. For this purpose the hour wheel usually runs in an oval hole and is pressed by a spring. Here the spring is integrated into wheel C. This means a precise bearing and requires less heigth.

family/generations:
1280: only hour, minute
1281: date for flat dial
1282: date for domed dial
1320: second
1321: second, date for flat dial
1322: second, date for domed dial
modifications of base plate, date:
3204: date for flat dial
3205: second
3206: second, date for flat dial
The assignment of flat/domed dial is based on few investigated Buren watches. Possibly Buren didn't sign carefully, since the Flume K3 mentions it vice versa.

Example, year: signature; shock device
ca. 1965: Dugena, 1320, Swiss Made, 30 Jewels; Incabloc

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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