Who can definately tell me what this black stuff is all along the top part of this $10? It appears to be more concentrated in the upper right corner. Is it soiling or foxing or mold? If its not soiling or foxing then what are the exact definitions of those terms in determining condition? Thanks in advance
Well Sir, To me it looks to be good ole American soiling from handling, perhaps a little sweaty wallet soil, but mostly handling with dirty hands...I bet it could tell stories Foxing describes small spots or discoloration stains on a note, often caused by mold or fungal growth on paper. It may also be caused by natural paper oxidation as well.
If it was "Foxing" then it would have a rust or yellow color, and most of the time foxing occurs during the manufacturing process. It should be a soiled note. I have seen notes in unc condition that look dirty that had been buried in a metal box. Just think of it, putting any coins or currency in a container that sweats during the time its hidden. Then pulled up later, it's got to be unpleasant, but a nice find. :devil: