I bought a Winchester 73 rifle. 24 in bbl, full magazine, forend cap, in 32 cal. or 32/20 for a more common designation. SN is 242K and gun is complete - looks like it will shoot if I get some BP lead ammo. The finish is all brown but not many dings or rust, original wood. Any info will be appreciated, especially how to grade these puppies. This one is pretty dang nice but I'm confused with the finish levels on a +100 year old gun. They are relaxed, right? TIA