Dugena 1018

Automatic · 7.75‴ · Switzerland · 1965

Also known as: ETA 2550

Dimensions
17.5 mm
Height
4.60mm
Jewels
23
Power reserve
42h
Timegrapher
Beat rate
21,600bph
Frequency
3Hz

Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.

Movement
Movement type Automatic
Winding type Automatic (Rotor-Driven)
Setting type Stem Set (Crown Pull)
Escapement type Swiss Lever
Control type Balance Wheel
Regulator type Pinned Regulator (or Index Regulator)
Rotor type Central Rotor
Shock protection Incabloc
Specifications
Lignes 7.75‴
Shape Round
Complications Sweep Second
Hand count 3
Hand sizes 1.20 x 0.70 x 0.20mm
Further measures
Mounting Diameter (Dm): 17.2mm
Stem height (T): 1.65mm
Mounting Height (F): 1.05mm
Origin & References
Manufacturer Dugena
Base caliber ETA 2550
Country Switzerland
Launch year 1965
COSC certified No
Signature
ca. 1970: Alpina 719, Swiss Made, 21 Jewels - Patented; Incabloc (Alpina 719, ETA 2550)
US import codes
Notes
Remarks: 1965-1972
differences not known between 1018, 1080, 3308
family:
780, 782, 3304: manual wind
781, 784, 3305: manual wind, date
1018, 1080, 3308: automatic
1019, 1081, 3309: automatic, date
Other data: balance staff: U3220 stem: W3151 mainspring / battery: 1.30 x 7.0 x 0.08mm
Ranfft mentioned about this caliber: There are variants with this quantity of jewels 17, 21, 23