In this instance, I would personally find the safe to be more collectable with the original artwork cleaned and touched up. The work is beautiful, “sheriff’s office” adds to the history/mystique of it. Any refinished safe could have that on top, but I would never trust that to indicate it’s true history. In its original condition, I would never doubt that part of its history, helping to insure that portion of its value. Same safe, same condition with Dr. SoSo across the top probably wouldn’t get the same price. I would be excited to see pics of your finished product, whichever way you choose. Bill