Diagnostic Controls & Presets Famous Modern $200+ Pocket Change Rarity
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
Class IV Offset Hub Doubling Mechanics
The 1984 Double Ear (FS-101 / DDO-001) was created during multiple-impression die hubbing when the working hub shifted downward toward the south before receiving its subsequent squeeze:
The doubling is exceptionally localized: while Lincoln's earlobe displays a completely separated, raised second lobe, doubling is also visible on Lincoln's beard and bow tie under 20× stereo magnification.
Plating Blister vs True Die Doubling Test
Because 1984 pennies are copper-plated zinc (introduced in 1982), microscopic gas pockets formed under the electroplated copper skin are frequently mistaken for the double ear:
Plating blisters are irregular, hollow, compressible with a wooden toothpick, and unique to a single coin, whereas the genuine 1984 Double Ear matches the exact die position cataloged in the Cherrypickers' Guide.
Documented Benchmark Auction Records
Heritage Auctions Signature Sale. Highest certified grade for the variety, featuring radiant fiery copper luster and full razor separation on the secondary earlobe.
GreatCollections Certified Auction. Choice uncirculated red specimen popular in PCGS Lincoln Cent Variety Registry sets.
Common business strike without doubling from a mintage of over 8.1 billion coins. Face value ($0.01) in circulated grades.
Frequently Asked Questions
What is the 1984 'Double Ear' Lincoln Cent?
It is a prominent doubled die obverse variety (FS-101 / DDO-001) where Lincoln's earlobe was doubled during the die hubbing process, creating a distinct, complete second earlobe directly below his normal ear.
Can I find a 1984 Double Ear in pocket change?
Yes! Over 8.1 billion pennies were minted in 1984, and many circulated examples of the Double Ear remain in pocket change, coin jars, and bank rolls. Circulated specimens typically sell for $35 to $75.
How can I tell the difference between a double ear and a plating bubble?
A true 1984 Double Ear has the exact anatomical shape of an earlobe, is solid raised metal, and matches certified die markers. Plating bubbles are irregular blister bumps caused by trapped gas under the copper plating that can collapse when poked.
Is there doubling anywhere else on the coin?
Yes. Under 10x to 20x magnification, doubling can also be seen along the lower beard points and on the knot and ribbon of Lincoln's bow tie.
Does the Denver Mint (1984-D) have a double ear variety?
No. The famous FS-101 variety only occurred on working dies at the Philadelphia Mint (no mintmark). There is no major 1984-D Double Ear.
What does FS-101 mean?
FS-101 indicates that this variety is the primary (#001) doubled die obverse cataloged in the Fivaz-Stanton Cherrypickers' Guide to Rare Die Varieties.
Will PCGS or NGC put 'Double Ear' on the slab label?
Yes! Both PCGS and NGC officially attribute the 1984 DDO-001 under their variety services and will print 'Double Ear' directly on the certified holder label.