Coin collecting, often referred to as the “hobby of kings,” is a global activity that welcomes anyone interested in gathering. Coins can be treasured for their artistic design, rarity, or historical significance.
Enthusiasts, or numismatists, often strive to complete sets of specific designs or denominations. Some are on the lookout for unusual pieces and limited runs. Minting errors like doubled images or off-center strikes can transform an ordinary coin into a rare find.
The 50 State Quarters Series, which ran from 1999 to 2008, played a big role in revitalizing coin collecting. This series, produced by the United States Mint, celebrated the heritage of all 50 states and included the District of Columbia and U.S. territories. Aimed at engaging more Americans, it sparked interest in coin collecting among a new generation.
A study from 2005 indicated that nearly half of Americans—around 147 million people—were, in some capacity, collecting these state quarters.
While the face value of these quarters remains 25 cents, only a select few hold collectible status due to mint errors or limited availability.
Grading matters in this hobby. An MS-70 rating indicates a perfect coin, with a sharp image and original mint luster—no visible marks, even under magnification. In contrast, MS-69 is nearly perfect but may have a couple of minor defects, while MS-68 can have four flaws, and so forth. As imperfections accumulate, the grade number declines.
This week, FinanceBuzz released a report highlighting some of the most valuable state quarters. If you happen to stumble upon one, it’s wise to consult a professional grading service to assess its true worth. Like many collectibles, a coin’s value hinges on its condition, rarity, and demand among collectors.
2008-D Alaska Quarter
An MS-69 grade 2008-D Alaska Quarter fetched over $2,000 at auction in 2017. The “D” signifies it was minted in Denver, while a typical uncirculated version is only worth a few dollars. Collectors seek this particular coin for its rarity.
Estimated value: $2,350
1999-P Broadstruck District, Connecticut
This quarter features a rare mint error called a broad strike. The “P” denotes it was printed in Philadelphia, with the Professional Coin Grading Service (PCGS) valuing this unique coin at over $4,000.
Estimated value: $4,362
1999-S Delaware Quarter
If in perfect shape, these quarters can command prices exceeding $1,000 at auction. They bear an “S” symbol for the San Francisco Mint and mark the inaugural year of the U.S. State Quarter Program.
Estimated value: $500-$1,000
Doubling the 2005 Die Minnesota Quarter
Many 2005 Minnesota Quarters were mistakenly printed with an additional or partial tree next to the state outline. If you find one in good condition with these defects, it could range in value from $500 to $700.
Estimated value: $500-$700
2000 New Hampshire Quarter
While the Mint produced over 673 million of these coins, most are not valuable. However, pristine examples can sell for more than $500, with one in MS64 condition sold for a record $2,128 in 2025.
Estimated value: $500
1999-S New Jersey Quarter
Rare varieties can fetch auction prices well above their face value, according to PCGS.
Estimated value: $500
2000 South Carolina Quarter
This quarter was among the first released in the state series. If there’s an extra strike during production, it may hold added value. PCGS noted that one South Carolina quarter sold for over $3,000 due to its MS69 grade.
Estimated value: $500-$2,500
2004-D Wisconsin “Extra Leaf” Quarter
If in good shape and featuring an extra ear of corn that resembles a leaf, this coin could sell for around $1,000. The position of the extra leaf varies, indicating the print variation.
Estimated value: $1,000
If you happen to find one of these in your change, a quick online search reveals numerous coin shops in the Portland area that offer grading services. They can authenticate your coins and store them safely in protective holders.
