Is that the correct bezel? Case back condition?
The bezel looks strange to me, but I am not familiar with the model.
It appears to be a fairly large case. Can you measure it (in mm, excluding the crown)? That is an important variable in valuations.
35mm is a good size (i.e. relatively large) for that period, and would appeal to most collectors. But given the condition of the dial (fair to good), even if the bezel is correct, €800 would be too high. in my view.
Note also that the crown is a later replacement.
IMO all original except the crown.
I would go for it because it has a cal. 30 (no T1 or T2) which is not so often found in this condition.
thanks @mac_omega , if u are available, I will do some questions in private.