I inherited this some time ago and looking for a value.
Serial #70-71385 puts it in the 1973-1974 range. Iron sites on what looks like a heavy barrel. Markings on barrel include .25-06, Sturm, Ruger & Co. and a backwards P and R together in a circle. My understanding is at some point around this time the manufacture of the barrels changed and the new ones had a warning on them?
2 position safety. Integral scope mount with rings and a valueless 3x12 Tasco Euro class scope.
Condition is very good with all it's bluing with just a few nicks in the stock from use.