Thats how all the /26\ guns look when new, just the later ones had an amber color shellac applied.
I can tell you from experience having sanded and cut into both russian and chinese stocks, the russian may be pretty grained but it is just as soft as the chinese. Looking at density scales they are both nearly identical and both are much lower (softer) then say walnut, oak, or beech. That being said, the catalpa (chinese) is much more resilient to rotting due to its oils.
The 56 to 59ish chinese had a different type of wood we haven't identified yet, although we have specimens to be tested.... We haven't got that done yet. These are more dense then the Russian birch and the Chinese catalpa.