My mind is reeling from how great these Skull Nickels are. Originally spawned from the Depression era Buffalo Nickel, the original currency was caste in a soft metal and loads of people were out of work - a pretty phenomenal combo for the spawn of art. They're mostly referred to as Hobo Nickels as the most prominent creators were, in fact, hoboes. You can read more about the history of the artifacts here and browse repositories of many of the coins here.

via Landry.