I keep my medals in a small, dry box under the bed.
A few months ago i noticed what could be described generally as a sort of rust appearing on them.
Not the usual orangey/red rust you have on a car or what not but in some cases a greeny/yellow substance around them. In some cases it's a few black spots.
I've separated them from the others as i think it may have been spreading!
Has anyone else had this? Any solutions?