5 3/4 x 8 3/4”’ | Hand Wind | Swiss Lever | No Seconds

• Listing ID: 1681
• Manufacturer / Brand: Unitas
• Caliber: 521
• Size in French Lignes: 5 3/4 x 8 3/4''' (according to manufacturer 5 1/3 x ...)
• Size range mm largest diameter: 0 - 22 mm
• Shape: Form
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: None
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 15
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Around 1950
• Identification: Dial side marked with Unitas logo and 521. Listed in the "Official Catalogue of genuine Swiss Watch repair parts" from 1949. Data sheet from 1951 is available.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-43#post-5616377
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)