Can I get some idea's of what a .308, non Garica marked Finnwolf, 98 to 99% would be worth? Serial number from what I can tell would date it around 1972. Stock seems to have been cut and a Pachmayr butt pad attached. It comes with Sako rings attached. A really nice one but the butt pad thing scares me a bit. How bad does this hurt the rifle, as far as collector value?