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View picture in original size

View picture in original size

Alpina 245 (Junghans J33)

Features
stem wind and set
sub second

Data
18.5''', Dm= 41.4mm
H= 6mm
15 jewels
f = 18000 A/h
power reserve 40h

Remarks
open face calibre
Breguet hairspring
differences not known between 215, 245

Example, year: signature; shock device
ca. 1920: Alpina - 3446

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