Great pick up Chance, and welcome to the world of pre 64 model 70 ownership. There were a ton of guys that had their bolt and extractor jeweled, very popular mod back then. The only thing for us today other than it not being original if that bothers you or not is that most the time they jeweled the serial right off the bottom of the bolt. If they did jewel it off it may be wise to have it checked prior to firing.