Hey guys just picked up this izula 2 at the flea market it had heavy patina and a little rust when I cleaned it up a bit I realized it has some kind of etching on it also I'm pretty sure it is stripped and somewhat polished. The surface feels smoother than any other knife I own. I guess I'm just curious what has been done to this knife. I paid 50$ for it and wondered if that seems fair given its condition etc. the edge also seems convexed do they come this way ?