Diagnostic Controls & Presets 2004-D Extra Leaf
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
High vs Low Leaf Geometry
Discovered in December 2004 in Tucson, Arizona, the Wisconsin quarter exhibits two distinct raised metal leaf anomalies on the left side of the corn ear:
- Extra Leaf High: The extra leaf curves upwards, touching the upper husk boundary.
- Extra Leaf Low: The extra leaf swoops downwards, its tip touching the top edge of the cheese wheel.
The Denver Mint Tampering Mystery
The origin remains one of numismatics' greatest modern mysteries. Unlike accidental die cracks which are jagged and thin, both extra leaves are thick, smooth, and deliberately curved.
Metallurgical analysis suggests a mint worker deliberately carved both leaf cavities into working dies using a curved engraver's burin or drift punch during die maintenance.
Mintage & Population Censuses
Out of 226,400,000 Wisconsin quarters struck at Denver, estimated surviving populations for each variety range between 5,000 to 10,000 pieces.
In circulated AU condition, pairs trade for $100 to $200. In certified MS-66, specimens command $1,200 to $1,800, and in MS-67 over $6,000.
Documented Benchmark Auction Records
Top-pop condition census specimen with flawless satiny cartwheel luster and needle-sharp leaf.
Immaculate blast-white surface with full contact between the extra leaf tip and cheese wheel.
Consecutive certified matched pair found in an original bank-wrapped roll in Tucson.
Frequently Asked Questions
What is the 2004-D Wisconsin Extra Leaf quarter error?
The 2004-D Wisconsin Extra Leaf is the most famous modern variety in the 50 State Quarters program. On the reverse, adjacent to the ear of corn, there appears an additional fourth raised leaf of husk. Two distinct varieties exist: 'Extra Leaf High' (pointing up) and 'Extra Leaf Low' (swooping down toward the cheese wheel).
Was the Extra Leaf caused by an accident or deliberate employee action?
While the US Mint officially attributed the varieties to normal die gouges or die stress, numismatic metallurgists strongly suspect deliberate human intervention. The extra leaves are smooth, three-dimensional, and curved to blend naturally into the design, suggesting an employee intentionally gouged the die with a tool.
How many 2004-D Extra Leaf quarters exist?
Third-party grading services (PCGS and NGC) have certified approximately 5,000 to 7,000 examples of the Extra Leaf High and about 6,000 to 8,000 of the Extra Leaf Low. While rare, thousands are believed to still circulate or sit unsearched in bank rolls.
Which variety is rarer: Extra Leaf High or Low?
Certified population reports indicate that the Extra Leaf High is slightly scarcer than the Extra Leaf Low by about a 15% margin, and it typically sells for a 20% to 30% price premium across all grades.
How much is a 2004-D Wisconsin Extra Leaf quarter worth in pocket change?
In average circulated condition (Extremely Fine to About Uncirculated), an Extra Leaf quarter is worth $50 to $150. In uncirculated condition (MS-63 to MS-65) it commands $250 to $600, and in flawless Gem MS-67 it sells for over $6,000 at auction.
Can you find Extra Leaf quarters on Philadelphia (P) mint coins?
No. The Extra Leaf variety occurred exclusively on dies used at the Denver Mint. All genuine Extra Leaf quarters carry the 'D' mintmark on the obverse behind George Washington's ponytail.
How can you detect a fake post-mint scratch?
A genuine Extra Leaf is in raised relief (embossed above the background field) because the die had a gouge cut into it. A counterfeit or fake made from pocket change is a sunken incuse scratch gouged into the coin with a nail or blade, which cuts below the coin's surface.