i bought a roll of these and found a few that i see being doubling this one kind of throws me into a circle,,any help thank you
Great article in the current edition of the Errorscope about 1967 DDo's that was written by a member here.
See this thread, to see a nice DDO from 1967. http://www.cointalk.com/threads/canada-1-cent-1967-doubled-die.241353/