State Quarter Errors
The 50 State Quarters program (1999-2008) produced billions of coins across 50 unique designs. The massive production volume created numerous errors, many still found in pocket change today.
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Scan My CoinKnown Errors
Extra Leaf Wisconsin Quarter (2004)
Some 2004 Wisconsin quarters show an extra leaf on the corn ear — either pointing up (high leaf) or down (low leaf).
How to check: Examine the corn ear on the Wisconsin reverse carefully. Look for an additional leaf that should not be there, near the lower left of the ear.
$100 - $1,500+Spitting Horse Delaware Quarter (1999)
A die gouge on the 1999 Delaware quarter creates what looks like a line of spit from the horse's mouth.
How to check: Look at the horse on the Delaware reverse. A raised die line near the mouth area indicates this error.
$10 - $50Missing Clad Layer
One clad layer separated before striking, exposing the copper core on one side.
How to check: One side appears copper-colored instead of the normal silver appearance. The coin may also be slightly lighter.
$50 - $300Broadstrike
Struck without the retaining collar, causing the coin to expand beyond normal diameter.
How to check: The coin will be visibly wider than a normal quarter with a smooth edge instead of reeded.
$25 - $200Double Struck
The coin received two impressions from the dies, often with the second strike slightly offset.
How to check: Two overlapping images will be visible. The degree of offset determines the value.
$50 - $1,000+Quick Checks
- 2004 Wisconsin quarters: Look for the extra leaf variety on the corn ear
- 1999 Delaware quarters: Check the horse for the 'spitting' die gouge
- All state quarters: Check both sides for consistent color (missing clad = copper showing)
- Check the edge for proper reeding — smooth edges may indicate a broadstrike
- Look for any off-center striking on all 50 designs
Frequently Asked Questions
Which state quarters have errors?
Notable errors include the 2004 Wisconsin extra leaf ($100-$1,500), 1999 Delaware spitting horse ($10-$50), and various doubled dies and off-center strikes across all 50 states.
Are state quarters still worth searching?
Absolutely. Many errors are still in circulation. The Wisconsin extra leaf alone can be worth over $1,000 and was found in pocket change.
How do I check my state quarters for errors?
Look for color differences, edge abnormalities, and design doubling. For a thorough check, upload photos to ErrorHunt AI which scans for 67+ known error types.
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