Junghans J38
- Kind:
- Indestructible Watch
- Production:
- 1926 - 1952
- Type:
- Open face
- Variants:
- J38 Astra, J38, J38a, J38a/1,
J38c/1, J38/1, 138/2 - Size:
- 18,5"
- Diameter:
- 41,2
- Height:
- 5,3
- f:
- 18000 A/h
- Power reserve:
- 33h
- Balance staff:
- U420
- Stem:
- W299
- Mainspring:
- 2,10 x 21,0 x 0,2 mm
- Reference picture:
- F.W.S 1947 page 79
- Shock resist:
- J38/2 Type 1
- Liftangle:
- 46°
Junghans catalog 1927
J38 Astra
3 jewels, compensating hair spring, club teeth escapement with visible steel pallets, gilt plates, well regulated
J38, 3 jewels, compensating hair spring, club teeth escapement with visible steel pallets, gilt plates, well regulated
Junghans catalog 1930
J38, Indestructible Watch, Pillar movement, flat compensating hair spring, safety roller, club teeth escapement with visible steel pallets, gilt plates, carefully regulated
Junghans catalog 1950
J38/2, Pillar movement, 4 jewels, pin pallet escapement, shock proof, turned pivot balance, solid pallet and balance bridge, flat antimagnetic hairspring, gilt plates, well regulated.
J38, pin set, 3/10 jewels, Astra, Indestructible Watch
J38a, pin set, 1 jewel for model Jota, Goodwear Watch
J38/1, stem wind and set, 3 jewels, lever with steel pallets
J38a/1, stem wind and set, 1 jewel for model Jota, lever with steel pallets
J38c/1, stem wind and set, different balance
J38/2, stem wind and set, 4 jewels, shock proof
J38/B, no jewels
Jota registered 1904
Astra registered 1926
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