In restoring a Mariner, there are some parts, that are really difficult to get to: Door coin insert plastics, door money lockout mechanics, playfield plastics, the stopper assembly at the bottom, the gate assembly on the right of the playfield. Also, the little playfield mushrooms. Happy to buy any of them - if you would ship!
Also, I have a Mariner with no Backglas - even this would be better than having nothing. Norway is probably a bit too far from Germany for this though