Junghans J42

Kind:
Master watch
Production:
1930 - 1937
Type:
Hunter case, Savonette
Variants:
J42, J42a, J42/1
Size:
19"
Diameter:
41,85 mm
Height:
4.5 mm
f:
18000 A/h
Power reserve:
35h
Balance staff:
J42 - U388, J42a - 387
Stem:
W324
Mainspring:
Zf3032
Reference picture:
F.W.S 1942 page 18
Case size:
52 x 68 mm
Jewels:
15
Catalouge group number:
155 for J42
150 for J42a
Weight movement:
36g

Junghans catalog 1934

"Junghans "Master" Watch, thin model, hunting case, Savonnette, bridge movement. 15 jewels, cut compensation balance, Breguet steel hair spring, regulating spring, lever escapement with visible jewels, steel escape wheel plain polished double safety roller,
gilt plates and bridges. Adjusted in different temperatures, hanging and lying, down to a few seconds."

Note: As far as I could find out the J42a movement is only mentioned in the 1930 catalouge and pricelist. 1931 only the J42, group number 155 is mentioned.