Roro85: Value will depend upon whether it's a Finn-match (all this requires is a Finn "force-matched" bolt) or if it has some remaining matching Soviet parts (bolt, mag floorplate, buttplate, plus original stock markings). There are examples that basically only had "SA" stamped on them and were left as virtually original unmodified rifles- these could be worth a lot. A Finn match might go for $200-$350, depending on condition. One with all matching original parts could go well beyond $500.
milsurpo