Some images of the Bezzera on the inside. I am trying to find the pressurestat. Have found one thing which says ”Sirai”, but which sits on the water inlet side. There is a wire going to it, but if I would hazard a guess, this would be some kind of electromagnetic valve switch for the boiler refill.

The wiring on the other side of the boiler looks much more like heater wiring and contacts to me... the big thing above the boiler has no logo, but has more of the size that a pressurestat has, according to the measures given earlier in the thread. Both thingies have some kind of tuning screw. The thousand dollar question is of course: which one is the pressurestat?