HORN STILETTO VINTAGE KNIFE with folding floating guard stilleto stileto

A nice black classic Stiletto. Handle, may be cow horn, doesn't look or feel like plastic. Brass plates and brass rivets. Blade is nice but not very sharp. Doesn't have a name brand anywhere, says Rostfrie on the blade, that is German for Stainless Steel. Doesn't look like it was ever really carried or used. Doesn't open up all the way without assistance, needs to be cleaned and adjusted. The folding guard is really cool and not very common.