Just a thought. Send a PM to Rick Adams. He's been dealing with a saxophone manufacturer in Taiwan that hand engrave their own horns superbly. If I remember right, they also offer this as a service. I saw one of their Ebay Ads and as Rick has dealt/is dealing with them, we can summise they are kosher.
I know it's not Europe, but as you are not getting much joy, it may be worth a shot.