6 3/4 x 8”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

• Setting lever spring broken on the movement shown
• Special balance form developed by Wyler called Incaflex

• Listing ID: 4179
• Manufacturer / Brand: FHF / Wyler
• Caliber: Wyler WC31 = FHF 60
• Size in French Lignes: 6 3/4 x 8'''
• Size range mm largest diameter: 0 - 22 mm
• Shape: Form
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: None
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Wyler Incaflex screw balance (see extra picture)
• Power Reserve: Approx. 46 hours
• Production Period: Unknown, probably around 1950
• Identification: Wheel train bridge marked with WYLER WC31, dial side with FHF 60.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-14#post-2647219
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)