As stated above, it is very difficult to successfully remove damage to a gloss dial. That said, I was able to remove the light, circular mark left on 1 of my Sub dials due to a hand that was installed too tightly using Meguiar's automotive plastic polish, followed by a bit of enhanced patination from a UV light. Of course, you must remove the dial from the movement before performing this work & there is no guarantee of the results. Best to experiment on a donor dial before attempting your main 1.