This is my first model 70 and I don’t know how original it is, the rear sight is a replacement, the safety is updated etc, however I am unsure of the barrel. The barrel looks to be too highly polished and salt blued. I have yet to take it apart, but it appears there should likely be a barrel date on the barrel shank? Those of you more familiar with Winchester can likely tell just by the finish though, looking forward to your opinions.
