There's a good comparison to be made by comparing this Springfield and that Enfield you pictured in another posting. See how the wood on this is rounded from sanding - you can see this clearly on the edges of the lockplate flat and the flat opposite the lockplate, and also where the wood surrounding the buttplate tang is rounded down where it meets the metal.
Compare the razor sharp wood edges on that enfield, that open grain, and the old slightly wrinkled look of that untouched varnish. The Springfield has some modern coat of shellac or similar light finish on it, no original finish there.
I think there might be some finish under that brown on the Enfield - I would not try to clean it to see, but it looks like some blue gone plum on that one.
Both are solid and honest specimens - but they do offer a good pair to study and compare