11 1/2”’ | Hand Wind | Swiss Lever | Sweeping Seconds

• Listing ID: 2288
• Manufacturer / Brand: FHF / Helvetia / Dugena
• Caliber: Dugena 998 = Helvetia 850 = FHF 72
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Glucydur
• Power Reserve: Approx. 39 hours
• Production Period: Unknown, probably around 1960
• Identification: Wheel train bridge marked with Dugena 998. Marked with the Helvetia logo and 850 under the balance. Listed as FHF 72 in the Flume K2 catalog of 1962.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-39#post-5110614
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)