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

Remarks:

• Click on the dial side
• Movement family:
  • Two-arm balance, fixed hairspring stud:
    • 44: Direct sweeping seconds, without date, 17/21 jewels
    • 441: Direct sweeping seconds, date, 17/21 jewels
    • 46: Small seconds, without date, 15/17 jewels
  • Three-arm balance, movable hairspring stud:
    • 144: Direct sweeping seconds, without date, 17 jewels
    • 1441: Direct sweeping seconds, date, 17 jewels
    • 146: Small seconds, without date, 15/17 jewels

 

• Listing ID: 2262
• Manufacturer / Brand: Otero
• Caliber: 146
• Size: 10 1/2'''
• Shape: Round
• Winding: Manual (Crown)
• Hand Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: None
• Jewels: 17
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Trishock
• Beats per hour: 18,000
• Balance Type: Nickel
• Power Reserve: Approx. 45 hours
• Production Period: Unknown, probably around 1970
• Identification: Movement marked with Otero logo and 146. Original data sheet available. Listed in the Flume K3 catalog from 1972.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-39#post-5169242
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)