This selfwinding movement is with 7 1/2 lignes very small, but rather thick. In this movement, which bases on the Caliber 1420, there’s even a date mechanism integrated. There existed versions with an Incabloc shock protection as well as with a Rufa shock protection system.
|Number of jewels:||21|
Nickel anular balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Hairspring key|
|Mentioning in literature (years):||1977|