It's a genuine Savage Mk1 4T with an added Mk3 scope in a bracket originally off a 43 BSA. There doesn't appear to be a scope number on the butt, but even from the photo's you can see the butt has been heavily sanded there at some point. I don't know who the seller's resident expert was, but some of the description is inaccurate & fanciful. I sold its 'sister' rifle, 0C43XX about five or six years ago for about a third of the price that that one is being advertised for.