The last quarter to come out in 2004 was Wisconsin’s. It has a cow and some corn on it. Apparently some were released with extra leaves on the corn, two different flaws. Beat up specimens are worth $300-$600 and mint condition specimens are worth more than $1000.
Joe was just telling me about this last night. Unfortunately none of the quarters I have collected for the girls is a “rare” one. So we still have to pay for college!