Handmade black and white scrimshaw knife on ancient mammoth tusk ivory by Roni Dietrich. Incredibly finely crafted knife from one of our long time clients who is no longer with us. Check out the damascus blade, the detailed file work and the stunning bolsters. The scrimshaw is by a well known scrimshander, Roni Dietrich. Bargain price for such a knife, not to mention the scrimshaw.