Rev,
I gave my daddy one, years ago, when I got back from Spain, after living there for awhile. They are for sale everywhere and I do mean EVERYWHERE over there. I got him the best one I could find out of Toledo. Next time I am over there I'll have a look and tell you what kind it is. Seems like it may be a custom knife, but I can't remember. The gypsies over there carry around HUGE navajas. I think they are more for show than actual use!