2004-D Wisconsin Extra Leaf Quarter: This error features an extra leaf on the ear of corn on the Wisconsin quarter. Known as the "Extra Leaf" variety, it’s highly sought after by collectors, with some specimens fetching high prices.
1999-P Georgia Quarter “Spitting Horse”: This error involves a die crack that creates the appearance of the horse “spitting” on the Georgia quarter. It’s a notable error that adds value to the coin due to its unique design flaw.
2005-P Minnesota Quarter “Extra Tree”: The “Extra Tree” error on the Minnesota quarter features an additional tree in the design. This rare mistake is valued by collectors for its distinctive and unexpected variation.
2000-P Maryland Quarter “Double Die Obverse”: This error involves a doubling of the design elements on the obverse (front) side of the Maryland quarter. Double die errors are rare and highly prized by coin collectors.
2004-D Michigan Quarter “Missing Edge Lettering”: The Michigan quarter with missing edge lettering is a notable error where the usual inscriptions are absent. This rare flaw increases the coin's value to collectors.
2003-P Alabama Quarter “Reverse Die Crack”: A die crack error on the reverse side of the Alabama quarter causes a visible crack on the design. This rare defect adds to the quarter’s value and collectibility.
1999-P Delaware Quarter “Cheerios” Variety: The “Cheerios” quarter, from a special release in Cheerios cereal boxes, is valuable due to its limited mintage and unique distribution. While not an error, its rarity and association with a promotional event make it highly sought after.