Looking closely, with an eye loop, I see...
burgundy paper, gray canvas, burgundy paper, tan canvas, repeat.
I stand corrected on my linen supposition.

It looks like canvas and paper micarta's layered. There has to be a substrate in between the canvas layers not just resin as there is some space there, it would squish flat under pressure.
Still, layering different substrates is going to be difficult and nearly impossible to duplicate under different conditions, only the original formula in the original shop is going to duplicate the results of snake skin micarta so dont worry kenrunchen, its not gonna happen. The original is the original, no matter how close another maker comes its still going to look different.