18 1/2”’ | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Pillar construction
• Roskopf movement design
• Variant with 3 jewels has no cap jewel for the balance on dial side, and steel pallets
• Movement family:
  • Junghans J38: 3/10 jewels, pin set, no shock protection, for Astra models
  • Junghans J38a: simplified J38 for Jota models, 1 jewel, no shock protection
  • Junghans J38/1: 3 jewels, stem set, no shock protection
  • Junghans J38a/1: simplified J38/1 for Jota models, 1 jewel, no shock protection
  • Junghans J38c/1: stem set, different balance, no shock protection
  • Junghans J38/2: 4 jewels, stem set, shock protection
  • Junghans J38/B: 0 jewels

• Listing ID: 19464
• Manufacturer / Brand: Junghans
• Caliber: J38
• Size in French Lignes: 18 1/2'''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown with pin/pusher
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 3, 10
• Setting Lever Screw/Pin Position: Center
• Balance Position: Left (240 - 360°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Approx. 33 hours
• Production Period: 1926 - 1952
• Country: Germany
• Identification: Movement marked with Astra. Listed in Junghans catalogs starting 1927.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)