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

• Listing ID: 5883
• Manufacturer / Brand: UROFA
• Caliber: 55
• 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: Small seconds
• 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: 1931 - 1940
• Country: Germany
• Identification: Dial side marked with UROFA 55. Listed in the Flume K1 catalog in the part from 1947.
• 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-67#post-9512272
• External Link 2: https://www.glashuetteuhren.de/kaliberuebersichten-modelle/uhren-rohwerkefabrik-ag-glashuette-urofa/kaliber-55/