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

Remarks:

• Rocking bar winding
• Click on the dial side
• The Otero 29 corresponds to the 28, but has sweeping seconds instead of the small seconds

 

• Listing ID: 5081
• Manufacturer / Brand: Otero
• Caliber: 28
• 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: Screw balance
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1957
• Identification: Movement marked with Otero logo and 28. Listed in the Flume K1 catalog in the part from 1957.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/#post-1125511
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)