I have the original wood and I guess the buttstock was refinished with varnish or tru-oil or something because it's quite shiny. The original forearm has what appears to he a single coat of thin varnish from the factory. Since it soaked in mostly it has a matt sheen.
The original buttstock is so broken and oil-rotted at the wrist that there's no saving it. I've been using a cheap, poplar Marlin replacement buttstock that came with the package deal when I bought the rifle years ago.
I'm not going to get too McPherson with the buttstock but will bed the cheeks of the stock to the receiver at the very least. I also need to see if the upper tang is bent since it has to pull down to the bottom tang more than I think it should. The rifle was assembled at the factory with a side screw (short) holding the bottom metal at the front and when the stock softened, the extra stress pulled the 1.5 threads out of the receiver. I know the screw was wrong from the factory because it has belt-sanding marks on it that match the bottom metal and the original bluing is worn the same on both from being carried a lot. Firing it with the front screw not holding the threads and likely over-tightening the tang screw against the rotted buttstock probably bent the upper tang a little, will compare to my other pistol-grip 336 and see if it needs tweaking.
I did get a proper screw and salvage the remaining threads so the bottom metal is secure.
Before I relieve and bed the forearm I have another conundrum to muddle through. A previous owner essentially ruined the magazine tube with a pinch-on sling mount. Someone subsequently tried to remove it with pliers and a claw hammer, possibly a pipe wrench too. So I got a new tube....but it is for the post-1955 rifles that have a long front sight ramp and the front peanut band behind the ramp rather than the dovetail front sight with the band in front. What that means is the tube is notched for the front band screw in the wrong place. I could turn the tube around to hide the misplaced notch and cut the two band screw notches anew but am afraid it will cause feeding issues due to spring and cartridge rims snagging it. There are other options too such as installing a later-model front band, ramp sight, and hardened dovetail screw base for the magazine tube. Once I get that sorted I'll work on a Paco Kelly forearm anchor fix.