John and Dave I was there and I remember Charlie and Evan talking about the reverse parchment. I could be totally wrong about this but I believe the "Reverse" came about from the fact that they hafted, by mistake of course, 5 or so knives with the bone on backwards or inside out or what ever the correct way to say this would be!
That explains the difference in the shading and colors of the Bone! That also explains the corrections on the tube end label where Charlie added the Rev and the Red Star! Charlie please correct me if I'm wrong on this.