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

Remarks:

• Movement family:
  • Otero 40: 10 1/2”’, hand winding, no date
  • Otero 41: 11 1/2”’, hand winding, no date
  • Otero 48: 11 1/2”’, automatic, no date
  • Otero 401: 10 1/2”’, hand winding, small date
  • Otero 411: 11 1/2”’, hand winding, small date
  • Otero 412: 11 1/2”’, hand winding, normal date
  • Otero 481: 11 1/2”’, automatic, small date
  • Otero 482: 11 1/2”’, automatic, normal date

• Listing ID: 20739
• Manufacturer / Brand: Otero / Dugena
• Caliber: Otero 401 = Dugena 1159
• 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...: Date
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Monorex
• Beats per hour: 18,000
• Balance Type: Nickel
• Power Reserve: Approx. 40 hours
• Production Period: Unknown, probably around 1957
• Country: Germany
• Identification: Movement plate marked with Otero logo and 40 (not 401!). Ratchet wheel of some movements marked with Dugena 1159. Listed as Otero 401 in the Flume K1 catalog in the part from 1957.
• Contributor ©: Anonymous