Carter, as a rule most serious collectors won’t polish locks, especially brass ones. The reason being that polishing/buffing wheels will smooth out the stamped edges on the lettering on the locks. Most times we’ll clean them up , removing built up dirt and crud, give them a good oiling followed by a wipe down. The main goal for most is not to remove any of the origional patena. Now that being said, a polished lock will lose some of it’s collector value, but if you never plan on selling the lock and just plan to display it for your own enjoyment, well…. Like they say, beauty is in the eye of the beholder. Personally I won’t polish any of my locks, but your free to do with yours as you please. Mark