Have most been accounted for or are some still out there or do you know. Is interesting to say the least to keep looking.
Nobody knows how many were produced, so it is difficult to say if they have all been accounted for. But it has been a famous error or variety since it was produced, and millions of people have hunted for them. I would think that you are much more likely to win the lottery several times before you find a genuine 43 copper cent while roll hunting. You never know though.