I received this from my great grandfather and know nothing about it. All of the Copperheads I look at do not have the snake on them and I do not know why. He told me it was very valuable and to keep it safe. I cannot do attachments so I put a link to the knife on Youtube here: https://www.youtube.com/watch?v=QtjiJVOx_0A I want to know more about it so anything would help....