Wanted: air filter cover for 250 ossa stiletto

Wanted: round air filter cover, 250 Ossa Stiletto. Let my buddy ride it coming home missing the cover, filter & broken piston ring. He had jumped a small highway over the top of a state patrol car. Was chased through a field dumped it and ran into a bunch of houses. I picked it up and took it home. He was test riding it for purchase. Lost his deposit. That was 1976, has sat in storage since. paint failed, but seat fine and still had some 1970’s air in the tires. I raced it in the late 60′ & 70’s. Wonderfull unit, we referred to them, as the Cadillac of dirt bikes in that era.