Not an answer to the OP question but I remember walking into Kershaw in Tualatin years ago, just down the road from me, and asking if it was possible to see the first ZT prototype (I had been following the developing ZT story online and knew that at least one existed). It was brought out and I was allowed to handle it and talked about it briefly. It was massive in bulk compared to the svelt 301 that would soon be on the market. The knife was marvelous on all fronts but it would be put on a diet in order to arrive at its final form. Quite a fist load but beautiful, built with excellent materials, ergonomic to the form of the human hand and so darn colorful compared to the usual black/silver knife stereotype. I was so tickled and honored to be allowed to see it and feel grateful to those responsible, you know who you are. Since back in the day, I've wondered what happened to that heavy prototype, as if built of depleted Uranium type of heavy, and wish it was mine though I don't collect prototypes.