Remington 1903A3 new purchase questions

[EddieB]

Purchased a Remingtion 1903A3 arsenal rebuild there is a lot of good but there is also some bad (I may have overpaid). The good, clean two groove barrel, all parts are R marked and to my knowledge parts look correct. The bad, it looks like someone either attempted to clean the stock or spilled something on the stock and there is a lighter patch on an otherwize beautify stock. I will include pics below.

Now for the Questions

When I looked up the serial number (41215xx) on OldGuns I get 1942, looking the number up on vishooter I get December 1943, which one is correct? I am thinking it is 12 1943 especially since the barrel is dated 12-43.

Is there something I can do to restore the color of the stock (maybe applying some oil)? I know there is no going back, but I would like it to look less obvious.

And the final question, how much does the issue with the stock change the value of the gun?

Thanks for any and all input/help.