Unitas 521
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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)
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