Curious how you can tell from that photo the receiver has been reblued?If you can put on more pictures I can help with the value. From that one picture I can tell the receiver has been re-blued which would reduce the value some. If the barrel has no sights and the rear sight bulge is missing the barrel has been replaced. With just what I can see the rifle would probably sell for about $900. When it comes to a pre 64 Model 70 it's all about the condition of the metal.