Ed, When I got this rifle, 511125, the wood was post war SA and the trigger group was mid to late WW2. The rest of the rifle was correct and in very good shape with a TE of 2 and MW of 1 on the 3 of 42 barrel. Wear patterns on all parts was consistant and I would like to think it is "original", but I really am not sure. It could have been built up from a like new barrel and receiver back when parts were easier to come by. If it is a restoration it is a good one. My gut feeling is that the bolt is original to the barrel but who knows for sure.