Do your coins turn dark if they are in the cold? My scotch and Soda copper turned darkish purple when I left it in the plastic. Does the copper coin and the gimmick turn dark? Hope it makes cents.
My coins for Digital Dissolve have not turned dark. However, after about three and a half months of use and abuse -- ie, accidentally dropping them on concrete after being bumped into -- they are not shiny anymore. Nonetheless, they still work immaculately and garner dynamic reactions .