Chipped plating on GTA shift knob

Has anyone had the problem of a thin layer of finish chipping off a 456 or 456M GTA shift knob? If so, any recommendations or experiences on bringing it back cosmetically that you can share would be appreciated. (I'm guessing that the previous owner wore a ring on his right hand and the idiot would bang it on the shift knob in time to whatever song was on the stereo). Thanks.