The 2004-S Wisconsin Quarter is worth anywhere from $5 in standard Proof condition to over $6,000 for rare “Extra Leaf” error varieties. Whether you found one in a proof set or a lucky pocket change discovery, understanding the specific details of this Madison-minted treasure is key to identifying its true market price.

Coin Version	Condition / Grade	Estimated Value
2004-S Clad Proof	PR69 – PR70	$5 – $15
2004-S Silver Proof	PR70 DCAM	$35 – $60
2004-D Extra High Leaf	MS65 – MS67	$150 – $450
2004-D Extra Low Leaf	MS67	$500+

History and Design of the 2004 Wisconsin Quarter

The Wisconsin state quarter, released in 2004, is the 30th coin in the iconic 50 State Quarters Program. Designed by Alfred Maletsky, the reverse features a cow, a round of cheese, and an ear of corn—symbols deeply rooted in Wisconsin’s agricultural heritage. While millions of these coins were struck in Philadelphia and Denver for general circulation, the “S” mint mark coins were produced exclusively at the San Francisco Mint.

If you are unsure whether your coin is a standard strike or a special proof, using a top coin identifier app can help you distinguish between the different metal compositions and finishes. Many collectors use CoinKnow to quickly verify the mint mark located on the obverse (front) of the coin to the right of George Washington’s ponytail.

The San Francisco Mint produced two distinct versions of the Wisconsin quarter: a copper-nickel clad version and a highly coveted 90% silver version. These were intended for collectors rather than daily spending. However, over the years, many of these sets have been broken open, and “S” mint quarters occasionally find their way into circulation. Spotting an “S” mint mark in your change is a rare treat that instantly indicates a coin with a premium over its face value.

The 2004 series became legendary in the numismatic world not just for its design, but for a mysterious minting error that occured in Denver. While the “S” proofs are the focus for quality seekers, the broader context of the 2004 quarter value is heavily influenced by the “Extra Leaf” varieties found on Denver strikes. Understanding this history helps you realize why the Wisconsin series is one of the most studied years in the entire program.

The 2004-S Clad Proof Value and Identification

The 2004-S Clad Proof Wisconsin Quarter is composed of a copper core with outer layers of copper and nickel (the same materials as your everyday change). However, because it was minted as a “Proof,” it features a mirror-like background and frosted details. These coins were handled with extreme care at the mint to ensure they arrived in pristine condition.

Most 2004-S Clad Proofs are held in their original US Mint packaging. If you find one that has been removed and is showing signs of scratches or dulling, it is considered “Impaired.” Even an impaired proof is usually worth about $1.00 to $2.00 to a casual collector. If the coin is in perfect PR70 condition, it can fetch a slightly higher price in the secondary market.

Grade (Clad Proof)	Estimated Market Value
Proof 65 (PF65)	$3.50
Proof 69 (PF69)	$7.00
Proof 70 (PF70)	$25.00

For everyday Americans, the challenge is determining if the coin is truly a proof. Look for the “S” mint mark! If the “S” is there and the coin looks like a mirror, you have a collector’s item. To get an instant estimation on your specific coin, the CoinKnow app can analyze the luster and surface quality to determine if it meets the criteria for a high-grade proof designation.

The 2004-S Silver Proof: A Higher Tier of Value

While the clad versions are common, the 2004-S Silver Wisconsin Quarter is where the value truly starts to climb. These were struck on 90% silver planchets. You can identify these by looking at the edge of the coin: if the edge is solid silver/white with no copper stripe visible, you likely have the silver version.

These silver quarters were sold in special “Silver Proof Sets.” Because they contain precious metal, their value never drops below the “melt value” of silver. Currently, a 2004-S Silver Quarter contains approximately 0.1808 troy ounces of pure silver. Beyond the silver content, the numismatic value for a perfect specimen is significantly higher than its face value.

Grade (Silver Proof)	Estimated Market Value
Raw/Melt Value	$5.00 – $6.50 (Live Spot Price Dependent)
PR69 Deep Cameo	$15.00
PR70 Deep Cameo	$45.00 – $65.00

Professional grading by services like PCGS or NGC can make a huge difference in price. A silver proof that earns the “Deep Cameo” (DCAM) designation—meaning the contrast between the frosted images and mirrored fields is extreme—is highly desirable. Keep an eye on current state quarter auction results to see how silver proofs from this era are trending in the current market.

The Famous 2004-D Wisconsin Extra Leaf Errors

Although the “S” mint mark quarters are special, no discussion of the 2004 Wisconsin Quarter is complete without the Denver (D) mint “Extra Leaf” errors. In late 2004, a series of quarters were discovered with an extra leaf on the ear of corn on the reverse. There are two distinct types: the “High Leaf” and the “Low Leaf.”

The High Leaf error features a distinct extra leaf that touches the cheese round. The Low Leaf error features an extra leaf that arcs across the husk toward the cheese. These were not supposed to exist and are believed to have been caused by a deliberate or accidental die alteration. Because of their rarity, they are some of the most expensive modern quarters in existence.

While the “S” quarters you find won’t have this specific error (it was localized to the Denver mint), it is important for every collector to check their entire 2004 stash. Use the CoinKnow photo recognition feature to scan your Denver quarters for these extra leaves. A high-grade 2004-D Low Leaf quarter can sell for over $1,000 at major auctions, while the High Leaf variety can easily reach $500 in Mint State.

How Condition and Grading Affect Value

For the 2004-S Wisconsin Quarter, condition is everything. Coins are graded on a scale from 1 to 70. A coin graded “70” is considered perfect, with no visible flaws even under 5x magnification. For modern proof coins like the 2004-S, most collectors only want coins graded 69 or 70.

If your coin has fingerprints, scratches from being in a pocket with other coins, or “milk spots” (white cloudy patches), the value will stay close to the face value or melt value. Collectors pay a premium for “eye appeal.” This is why keeping coins in protective holders or their original mint plastic is so crucial.

Condition	What to Look For	Value Impact
Circulated	Scratches, worn details on the cow	Face Value ($0.25)
Uncirculated	Fresh from a roll, original sheen	$1 – $5
Proof (S)	Mirrored finish, S mint mark	$5 – $60

If you think you have a 70-grade coin, it might be worth the fee to have it professionally certified. However, for most people who find these in a drawer or a piggy bank, enjoying them as a cool piece of American history is often more rewarding than the monetary gain.

Tips for Selling Your 2004 Wisconsin Quarters

If you’ve identified a valuable 2004-S Silver Quarter or a rare Denver Extra Leaf, the next step is selling it. Selling to a local coin shop is the fastest way to get cash, but you will likely receive 50-70% of the actual market value as the dealer needs to make a profit.

For maximum profit, online marketplaces like eBay are popular. Look for “Sold Listings” to see what people are actually paying—not just what sellers are asking. High-value error coins should ideally be sold through reputable auction houses like Heritage Auctions or GreatCollections, where serious numismatists bid.

Always handle your coins by the edges to avoid leaving oils from your skin on the surface. Never clean your coins! Cleaning a coin with chemicals or cloth can create micro-abrasions that destroy its numismatic value. A dirty silver quarter is usually worth more than a “shiny” cleaned one in the eyes of an expert collector.

FAQ

Q: How can I tell if my 2004-S Wisconsin Quarter is silver or clad?

A: Check the edge of the coin. If you see a copper-colored stripe, it is a clad proof. If the edge is solid silver and you don’t see any copper, it is likely the 90% silver version. You can also weigh it; the silver version weighs 6.25 grams, while the clad version weighs 5.67 grams.

Q: Is a 2004-P or 2004-D Wisconsin Quarter worth anything?

A: Generally, “P” and “D” quarters from 2004 are only worth $0.25 if they are circulated. However, if they have the “Extra High Leaf” or “Extra Low Leaf” error, they can be worth hundreds or even thousands of dollars.

Q: Where is the mint mark on the 2004 Wisconsin Quarter?

A: The mint mark is on the front (obverse) of the coin. Look to the right of George Washington’s neck, just below the “In God We Trust” motto. You will see a small P, D, or S.

Q: Should I get my 2004-S Wisconsin Quarter graded?

A: It is only worth grading if the coin is in perfect condition (PR69 or PR70 for proofs) or if it is one of the rare Extra Leaf varieties. For standard clad proofs found in circulation, the cost of grading will likely exceed the value of the coin.