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What's the last tool on the lower right in the second picture. It's on the pink cloth. Angular with horizontal bands. I have one almost identical and have wondered as to it's purpose. [/quote]

My best guess is it was going to be turned into a full groove celt, but I am not sure. Others may have a better idea. My first thought was, its just a rock, but you can definitely tell it has been worked on when you examine it closer.