What are the best coin rolls for mule/error coin mining? I know the % is infinitessimal in pretty much all cases; but the members here seem to have a wealth of experience and opinions. Little knowledge here. Thanks!
If you're talking double denomination mules, given the rarity of them and the fact that these were likely created on purpose by a mint worker and then smuggled out of the mint, I'd say your chances of finding one in a roll or bag are less than infinitessimal.
