Ammietwist said:The green stuff is corrosion as well. I'm very familiar with this as I grew up around hundreds of brass, copper, iron and bronze antique pieces around the house, and they have to be maintained.
As I originally said though, the leather and canvas can easily mold if left in a humid and dry place. Any bag would.
Wow! You must have been a busy little cleaner bee huh?

Thanks for the info, I obviously was mistaken. Learn new things every day huh?

