This movement is a generic ladies' watch movement, which only shows hour and second. Different than on its relative caliber M78, the dial is mounted with a spacer on the main plate. Additionally, it uses only a simple click spring instead of a click assembly.
There do exist other versions of this caliber, which are using the center second.
Nickel anular balance|
|Balance bearing / direction hairspring:||Bridge|
|Adjust mechanism:||Hairspring key|