Junghans Pocketwatch, movement J17 - Dirk E. Fassbender

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Junghans Pocketwatch, movement J17

Junghans
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f:
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Reference picture:

Master watch
1914 - 1930
Hunter case
J17, J17a
106
18,5'''
42,1 mm
41,8 mm
5,0 mm
18000 A/h
34 h
U409
W298
Junghans mentions 3 different stems
with 23,75 mm, 25,4 mm
and 26,4 mm length
Zf3495, 460 x 16,0  x 2 x 0,20 mm
Junghans mentions spring
number 1002 465 x 2,0 x 0,20 mm.


Junghans catalog 1927 text:

Cut compensation balance, Breguet steel heir spring, lever escapement with visible jewels, steel escape wheel, double safety roller, gilt plates, adjusted in different temperatures, hanging ans lying, down to a few seconds.
15 jewels

Junghans catalog 1930 text:

Junghans "Quality" Watch and "Master" Watch, hunting case
Bridge movement

J17a
15 jewels, Breguet compensating hair spring, lever escapement with visible jewels, double safety roller, gilt plates. Adjusted in different temperatures, hanging and lying, down to a few seconds

J17
15 jewels, cut compensation balance, Breguet steel hair spring, lever escapement with visible jewels, steel escape wheel, double safety roller, gilt plates. Adjusted in different temperatures, hanging and lying, down to a few seconds
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