I just inherited a Marlin Model 336 .30-30 Manufatured in 1972. It is in excellent condition with the acception of some rust on the barrel in the area where the manufacturing stamp is located. Bore and bolt looks like it's never been fired. What can anyone tell me what I have? Is it a gold mine or a run of mill lever action rifle? Also, can some one suggest what to use to remove the rust in a way so's not to damage the finish? Any help and back ground would be greatly appreciated. I know nothing about lever action rifles and Marlin products. Thx....