10 1/2”’ | Hand Wind | Swiss Lever | No Seconds

• Listing ID: 3324
• Manufacturer / Brand: Arogno
• Caliber: 34
• Size in French Lignes: 10 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 15
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown
• Country: Switzerland
• Identification: Dial side with old Arogno logo and TR mark of Ebauches SA, which was introduced in 1928. Shown in the Classification Horlogère fromof 1936 and in the Flume K1 catalog with a different bridge side and a different setting lever spring. The SWISSCO Quick-Check (ca. 1960) lists both the variant of the setting lever spring shown here and the one from the Classification.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-26#post-3636844