5 1/4 x 8 1/2”’ | Hand Wind | Pin Lever | No Seconds |

Remarks:

• Rocking bar winding
• Click on the dial side
• According to the data sheet, the movement is also available with 15 and 17 jewels

• Listing ID: 3941
• Manufacturer / Brand: Oris
• Caliber: 410
• Size in French Lignes: 5 1/4 x 8 1/2'''
• Size range mm largest diameter: 0 - 22 mm
• Shape: Form
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: None
• Escapement: Pin Lever
• Date, Day, Month...: None
• Jewels: 7
• Setting Lever Screw/Pin Position: Right
• Balance Position: Left (240 - 360°)
• Shock Protection: Oris
• Beats per hour: 18,000
• Balance Type: Unknown, balance is missing
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1950
• Country: Switzerland
• Identification: Barrel bridge marked with CAL. 410. Listed in the 1952 part of Flume K1 catalog.
• 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-17#post-2826690