6 3/4 x 8 1/4”’ | Hand Wind | Cylinder | No Seconds |

Remarks:

• OISA / O.I.S.A. = Orologeria Italiana Società Azionaria, founded in 1937 by Domenico Morezzi. Morezzi produced his own movements and complete watches. Hemeros was one of his watch brands
• Rocking bar winding
• Click on the dial side
• This movement is typically found in watches with the brandname OISA EXTRA

 

• Listing ID: 5699
• Manufacturer / Brand: OISA
• Caliber: 6 3/4 x 8 1/4'''
• Size: 6 3/4 x 8 1/4'''
• Shape: Form
• Winding: Manual (Crown)
• Hand Setting: Crown
• Seconds Hand: None
• Escapement: Cylinder
• Date & Day: None
• Jewels: 6
• Setting Lever Screw/Pin Position: Left
• Balance Position: Right (0 - 120°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Unknown
• Production Period: Unknown, maybe around 1940
• Identification: Movement marked with O.I.S.A. Not listed in any movement identifier known to me.
• External Link 2: https://watch-movements.eu/blog/en/2019/03/31/domenico_morezzi-2-2/
• Country: Italy
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)