10 Most Valuable State Quarter Errors Sold For $66,000 

10. 1999-P Pennsylvania Quarter Struck on an Experimental Planchet of Copper and Zinc 75% Copper 25% Nickel 24.26 mm 5.67 grams $6,325

9. 2000-P 25C Maryland Statehood Quarter–Struck on Clad Dime Planchet–MS64 PCGS. 75% Copper 25% Nickel 24.26 mm 5.67 grams $6,325

8. 1999-P 25C Georgia Quarter — Struck on an Experimental Planchet — MS67 PCGS 75% Copper 25% Nickel 24.26 mm 5.67 grams $7,200

7. 2006-P 25C North Dakota State Quarter — Struck on Steel Washer — MS62 PCGS 75% Copper 25% Nickel 24.26 mm 5.67 grams $8,625

6. 2000 1C Lincoln Cent — Struck Over a 2000-P New Hampshire State Quarter — MS65 PCGS 75% Copper 25% Nickel 24.26 mm 5.67 grams $9,400

5. 1999-P SBA$ Anthony Dollar–Struck on a 1999 Georgia State Quarter–MS63 NGC 75% Copper 25% Nickel 24.26 mm 5.67 grams $9,500

4. 1999-P 25C Pennsylvania Statehood Quarter Experimental Planchet–MS67 PCGS. 75% Copper 25% Nickel 24.26 mm 5.67 grams $9,775

3. 1999-P 25C New Jersey Statehood Quarter — Struck on Foreign Planchet — MS65 NGC 75% Copper 25% Nickel 24.26 mm 5.67 grams $13,200

2. 2000 Lincoln Cent — Struck on a 2000-P Virginia Statehood Quarter — MS66 PCGS. 11-cent double denomination errors 75% Copper 25% Nickel 24.26 mm 5.67 grams $26,400

1. 2000-D $1 Sacagawea Dollar / South Carolina Quarter Mule MS64 PCGS. 75% Copper 25% Nickel 24.26 mm 5.67 grams $66,000