10 1/2”’ | Hand Wind | Swiss Lever | Indirect Sweeping Seconds |

Remarks:

• The Ultra 10 1/2”’  is also available with small seconds

• Listing ID: 2628
• Manufacturer / Brand: Ultra
• Caliber: 10 1/2''' SC
• Size in French Lignes: 10 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: 15
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably 1933
• Country: France
• Identification: Dial side marked ULTRA, not listed in any movement finder I know of. A Geismar catalog from 1933 lists the version of the movement with small seconds.
• 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-35#post-4308257
• External Link 2: https://watch-movements.eu/blog/en/2018/07/01/ultra-watches-and-movements-from-france/