Vintage Case Shark Tooth folding knife with sheath

I got this in the early 80s in a trade and have had it ever since. I was going to try and clean it and polish it up but decided to leave it to someone who knows what they are doing. Knife is well used so look at the pics and ask any questions. Knife has a sticky film in spots and what looks like corrosion on the brass tail. Bid accordingly for a knife that needs restored. Mechanically feels solid. U.S. orders only. No returns. Selling as a knife that needs some tlc.