Are you interested in collecting all the state quarters? Wondering which ones are worth the most?
Collecting state quarters can be a fun and rewarding hobby, but not all quarters hold the same value. While most are only worth face value, some rare ones—especially those with mint errors, low mintage, or in mint condition—can be worth thousands of dollars.
Here are the most valuable state quarters you should look out for. Even experienced collectors can have a hard time finding these rare coins, but this list will help you know what to search for.
Table of Contents
- 1 1999-P Experimental Delaware State Quarter
- 2 2003-D Maine State Quarter
- 3 2000-P South Carolina State Quarter
- 4 2004-D Wisconsin State Quarter: Extra Leaf Low
- 5 1999-P Connecticut State Quarter
- 6 1999-P Delaware State Quarter
- 7 1999-P Pennsylvania MS67 Struck on an Experimental Planchet
- 8 2006-D North Dakota State Quarter
- 9 2004-P Texas State Quarter
- 10 2008-D New Mexico State Quarter
- 11 FAQs
1999-P Experimental Delaware State Quarter
In 1999, the U.S. Mint tested different metal compositions for the Sacagawea dollar by striking quarters using experimental planchets.
- Mint Mark: Philadelphia (P)
- Error: Struck on experimental alloy
- Grade: MS66
- Highest Sale Price: $4,888
This test involved five states: Delaware, Connecticut, Pennsylvania, New Jersey, and Georgia. Since these coins were made in extremely low numbers, they are highly valuable. The 1999-P Delaware State Quarter is especially rare and sought after by collectors.
2003-D Maine State Quarter
Released on June 2, 2003, the Maine State Quarter is common in circulated condition but extremely rare in high grades.
- Mint Mark: Denver (D)
- Grade: MS68
- Highest Sale Price: $2,300
Quarters graded MS67 or higher are very difficult to find, making them valuable among collectors.
2000-P South Carolina State Quarter
The South Carolina State Quarter was the eighth release in the State Quarter Program in 2000.
- Mint Mark: Philadelphia (P)
- Grade: MS69
- Highest Sale Price: $8,000
Only a few South Carolina quarters have been graded MS69 by PCGS, making them incredibly rare and valuable.
2004-D Wisconsin State Quarter: Extra Leaf Low
Minting errors in the Statehood Quarter Program are rare, making any mistakes highly valuable.
- Mint Mark: Denver (D)
- Error: Extra leaf on corn husk
- Grade: MS67
- Highest Sale Price: $6,000
The Wisconsin Extra Leaf Quarters feature an additional husk on the corn design—one appearing lower and another slightly higher. These are among the most famous minting errors in state quarters.
1999-P Connecticut State Quarter
The 1999-P Connecticut State Quarter was struck on an experimental planchet originally meant for the Sacagawea dollar.
- Mint Mark: Philadelphia (P)
- Error: Struck on Sacagawea planchet
- Grade: MS69
- Highest Sale Price: $10,500
These quarters are heavier, thicker, and have a gold color compared to regular quarters. Their smooth edges further distinguish them from normal quarters.
1999-P Delaware State Quarter
As the first coin in the Statehood Quarter Program, the Delaware Quarter is historically significant and highly collectible.
- Mint Mark: Philadelphia (P)
- Grade: MS66
- Highest Sale Price: $4,888
Many of these quarters were saved when they were first released, but finding mint-state examples is still challenging.
1999-P Pennsylvania MS67 Struck on an Experimental Planchet
Pennsylvania was one of five states involved in the Sacagawea planchet experiment.
- Mint Mark: Philadelphia (P)
- Error: Struck on experimental planchet
- Grade: MS67
- Highest Sale Price: $2,520
These trial quarters are extremely rare, making them highly valuable among collectors.
2006-D North Dakota State Quarter
The North Dakota State Quarter, released on August 28, 2006, is common in circulation but rare in high grades.
- Mint Mark: Denver (D)
- Grade: MS68
- Highest Sale Price: $3,760
Mint-state examples graded MS67 and higher are scarce, making them more valuable.
2004-P Texas State Quarter
The Texas State Quarter, released on June 1, 2004, features a grease strike-through error that makes it one of the most expensive state quarters.
- Mint Mark: Philadelphia (P)
- Error: Grease strike-through
- Grade: MS69
- Highest Sale Price: $10,000
Even without the error, an MS69 Texas quarter can still be worth around $3,055.
2008-D New Mexico State Quarter
The Mint produced 244,400,000 New Mexico quarters in 2008, but Denver-minted versions are more desirable due to their sharper strike and better finish.
- Mint Mark: Denver (D)
- Grade: MS67+
- Estimated Value: Over $2,000
Finding an MS67 or higher example is difficult, making them valuable among collectors.
State quarters remain a popular collectible, and these rare examples have sold for thousands of dollars. If you come across a mint-state or error quarter, it might be worth much more than just 25 cents!
FAQs
What is the most valuable state quarter?
The 1999-P Connecticut State Quarter struck on an experimental planchet sold for $10,500.
Why are some state quarters worth so much?
State quarters with mint errors, low mintage, or in high grades are rare and valuable.
How can I tell if my state quarter is valuable?
Check for mint errors, rare varieties, and high grades using a professional coin grading service.
What is the rarest state quarter error?
The 2004-D Wisconsin Extra Leaf Quarter is one of the most famous and valuable errors.
Where can I sell rare state quarters?
You can sell valuable state quarters at coin auctions, online marketplaces, and coin shops.
