That is rough on the outside.
How does it look on the inside? Inside the bore, inside the trigger assembly, inside the magazine. Sights aside (a difficult factor), those old Mausers tend to work well. They tend to shoot well with ammunition of the type used initially.
From the photos it does not appear to be a serious collector's piece. Doing more than just a cleaning gets into the borderline 'restoration' category. Replacing the stock seems reasonable (presuming a proper 'original stock' can be located) is making the rifle into a 'mixed number' item; not original. I gather from internet articles the 1895 Mauser was a 7x57mm Mauser chambering, that is a good cartridge, both then and now.
You might find a market for that rifle in the collector community, but usually that level of finish is not (relatively) valuable. It is probably more value than a similar Turkish Mauser, but not as much as a better grade Peruvian. I find a certain appeal to old rifles. But I'm not a big time collector.
