1: The rarest state quarter is the 2008 Oklahoma quarter with the "Extra Leaf" error.
2: Only 6,000 of these quarters were released before the error was discovered.
3: This error occurred when an additional leaf was mistakenly added to the design.
4: The value of the Oklahoma "Extra Leaf" quarter can range from $300 to $600.
5: Collectors are always on the lookout for rare coins like the Oklahoma quarter.
6: The rarity of this quarter makes it a prized possession for numismatists.
7: Keep an eye out for valuable state quarters in your collection.
8: Rarity, error coins, and high demand contribute to the value of state quarters.
9: The quest for rare state quarters continues to intrigue collectors worldwide.