Diagnostic Controls & Presets Famous 50 State Quarter Variety • $20–$250+ Value
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
Single-Squeeze Hubbing Shift Dynamics
Introduced around 1997, single-squeeze hubbing was engineered to eliminate doubled dies by creating working dies in a single hydraulic press stroke. However, if the hub slightly shifts or slips during initial engagement:
In 2005, multiple Minnesota reverse dies suffered hub slippage, producing dozens of cataloged 'Extra Tree' varieties where secondary pine trees appear beside tree #3, tree #4, or near the state outline.
FS-801 (DDR-001) Primary Marker
Among the 60+ known Minnesota DDR varieties, DDR-001 (Cherrypickers' FS-801) is the most prominent and valuable:
Unlike minor branch bubbles, DDR-001 shows complete vertical trunk relief and tiered evergreen branches standing independently in the lake landscape.
Documented Benchmark Auction Records
Heritage Auctions Signature Session. Top pop certified example of the premier FS-801 variety with booming satin luster.
GreatCollections Certified Auction. Strong secondary branch doubling variety to the right of the fourth tree.
Standard circulation quarter without hub doubling. Face value ($0.25) in circulated condition.
Frequently Asked Questions
What is the 2005-P Minnesota 'Extra Tree' Quarter?
It is a popular doubled die reverse (DDR) variety on the 2005 Minnesota State Quarter where an extra evergreen tree or branch cluster appears adjacent to the trees on the right side of the coin.
How did the 'Extra Tree' get on the coin?
During single-squeeze hubbing, the working hub made initial contact with the die blank, slipped slightly under pressure, and continued the squeeze, impressing a secondary, offset tree into the die face.
How many different 'Extra Tree' varieties exist?
Specialist numismatists have cataloged more than 60 distinct doubled die varieties for the 2005-P Minnesota quarter! The most famous and valuable is DDR-001 (FS-801).
How much is an Extra Tree Minnesota quarter worth?
Circulated examples typically sell for $15 to $35, while uncirculated Mint State (MS-65 to MS-67) coins range from $65 to over $250.
Can I find this error in pocket change?
Yes! Millions of 2005 Minnesota quarters were released into circulation. Coin roll hunters frequently find Extra Tree varieties in standard bank quarter rolls.
Do Denver Mint (2005-D) quarters also have extra trees?
Yes, there are a few minor 2005-D DDR varieties, but the vast majority of dramatic, high-value Extra Tree varieties occurred on Philadelphia (2005-P) dies.
Will PCGS and NGC certify this coin?
Yes, both PCGS and NGC attribute the major Minnesota DDR varieties (such as FS-801 and FS-802) under their variety attribution tiers.