Boardrider the blade is carbon as was all of the original NASA Mod.17's. The handle may have been altered by Col. Salvo but only by shaving or sanding some of the micarta away. All the knives, I believe came with the brown micarta. Joe could confirm or correct me on this as his knowledge is far superior to mine with regards to Randalls. The handle does look as though it possibly could have been bent a little or it just was made like that at the shop and it could be lens distortion as you suggested.
Jack the sheath is a Johnson Brown Button. Johnson took over sheath production after Heiser.
As has been stated the knives were ordered from Randall without sheaths. However one could purchase a sheath for a knife at any time.
Too many knives are popping up for sale right now and not enough money to buy all of them. But this is a honey.