17”’ | Hand Wind | Swiss Lever | Small Seconds |
Remarks:

• The setting lever spring on the movement shown is broken off
• Movement family:
  • Felsa 140, 154, 278, 310: 16”’, max. height 4.35 mm, different bridge shapes
  • Felsa 150, 273, 322: 16”’, max. height 3.67 mm, bridge shapes similar to 140, 278 310
  • Felsa 173, 311: 17”’, max. height 4.35 mm, other bridge shapes
  • v174, 323: 17”’, max. height 3.67 mm, bridge shapes similar to 173, 311
  • Felsa 323-1: as 323, plus indirect sweeping second

• Listing ID: 150
• Manufacturer / Brand: Felsa
• Caliber: 311
• Size in French Lignes: 17'''
• Size range mm largest diameter: 31 - 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 15
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Bimetallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1940
• Identification: Dial side marked with the Felsa logo. Listed in the 1942 Ebauches SA catalog
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-60#post-8569873
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)