Our black areas are faded badly too but had decided a long time ago to leave it alone. Sometimes, I get lucky when I do touch-ups and the results are decent but knew in the case of the tag, I wouldn't do it justice without it "looking" restored, definitely not as good as produced. Figured if the edges are straight and the rivets are tight, with the legible/raised numbers, good enough. I sure was sure anxious to read your replies to this post however. I learn something valuable and applicable EVERY TIME I log in and do "my reading"...so grateful to all of you!