My first post here.  I sell a wide variety of items on eBay for our local non-profit thrift store (White Elephant).  A Cattaragus knife was donated and I'm having trouble finding out what type of knife it is (see photograph).  I found one exactly like it on eBay and the seller thought it was made from a file but the "grooves" on it are more like slight ridges, not cutting grooves as on a file.  I'm hoping that someone will know what type of Cattaragus knife this is.  Any information will be most helpful.  Thanks.