Ok thought it was just some junk. The "inserts" looked just painted, the quality is poor and the scenery seems like a modern composition, just wanted your opinion that it is a fake.
I called the auction house and was connected with their "asiatics expert". After telling my points, she told me that the seller is a well known and trustworthy collector and that she can 100% assure the correctness of the items description in their sales catalogue...
I quote (my translation): "Magnificient Tsuba made from patinated copper. Japan, Edo-time(1603-1868) Inlays of a general fighting an Oni. Finely worked out with high relief, rich details in gold, silver and copper. Backside with Mountains, and Letters [No signature, I asked and she said theres none] and the other part of the blade. D ca.8cm, Signs of age, Important piece from an important asiatics collection."
I want to underline that this is one of Germanys TOP 5 Auction houses...
Gotta grab a scotch...