Ok I have Motobecane from 79 - and its from France (even bought there) it's not high end bike but i like it
So 99% that this is french threaded - checked modern BB it does not come full (I just tested that way very lightly)
Pedals are 100% old french threaded
For now nut and bolt + spanner on external side didi't do any movement
Cups are fine - spindle has some light wear - my hypothesis because of long standing in some old barn, old grease was like butter but there was a lot of it.
Now I'm not really sure if I need to remove it. Maybe just replace bearings and spindle?