Parts of the 9 may be surrounded by zinc rot, although the 9's on the 1999 penny are rife with die chips as well. The upper 1 I would say has a die chip, but I say that because I have a similar 1999 with a chip in the exact same location. The raised is a bit of a puzzle, so I would have to agree with pennyman that it might well be zinc rot. Quite neat how it's in such a smooth arc like that, though.


























