by 1944 the Germans didn't really have the time to stamp every little part any more. once it was made, it was assembled and on it's way to the battlefield as quickly as possible.

as far as refinishing the stock goes, i'm unsure what may be best to use for that and how to go about it safely.

and if you'd like to try to return it to as close to Germanicon issue appearance as you can, then by all means go ahead. if it turns out well congratulations. if not, it doesn't really hurt anything. i've done a lot of part swapping ans stock switching on mine to get them to look period and manufacturer correct. i'm happy with them