I found this 1998 penny with extra colar, can somebody help me how to clean this penny please. http://s1232.photobucket.com/albums/ff378/loulou1066/?action=view¤t=IMG_1703.jpg http://s1232.photobucket.com/albums/ff378/loulou1066/?action=view¤t=IMG_1704.jpg http://s1232.photobucket.com/albums/ff378/loulou1066/?action=view¤t=IMG_1706.jpg http://s1232.photobucket.com/albums/ff378/loulou1066/?action=view¤t=IMG_1707.jpg
First, I don't see an extra collar. Second, I don't see a reason to clean it, just looks like Zinc discoloration to me. And cleaning will just put tiny abrasive scratches on the surface (that in the very least will be seen under a magnifying glass).