Index Of Completed Entries Index entries are a mixture of higher-level and lower-level entries. Lower-level entries are often inserted into the index in alphabetical order and may therefore be separated from the higher-level entry they fall under in the Checklist. A Abrasion Doubling Absent Edge Lettering Abnormally Strong Strike: Due to Stacked Coins or Planchets Abnormally Strong Strike: Extremely large Broadstrike Abnormal reeding: Low, Narrow Reeds Abnormal Upset Accidental Die Abrasion Acid Jobs All Clad or Coreless Coins Alloy Errors: Intrinsic metallic inclusions Annealing Error: Improper Annealing Anvil Die Collar Clash Arcing Rim-to-rim Die Crack Assay Clips Assay Value Repunched Asymmetrical: Split die B Bilateral, Radial, Antipodal Die Breaks Bilateral Split Collar Bi-level Die Cracks Bi-metallic coin 1993, 50 Roubles; temporal/transitional mule Bi-metallic coin with Doubled Punched Center Hole Bi-metallic coin with Incomplete Trilaminar Core Bi-metallic coin with Misaligned Center Hole Bi-metallic coin with Misaligned Core Bi-metallic coin with Ring Accidentally Punched from Solid Metal coin Bi-metallic coin with Ring Incomplete Punch Bi-metallic coin with Struck Core Bi-metallic coin with Struck Core from Another Country Bi-metallic coin with Struck Outer Rings Bi-metallic coin with Wrong Core Inserted Bi-metallic design struck on wrong bi-metallic planchet Bi-metallic planchet Struck by Solid Denomination Design Bi Metallic Ring Struck with dies From the Wrong Country Bi-metallic Solid Denomination Planchet Struck by Bi-metallic Dies Blakesley Effect Blank Blanking and Cutting Errors Blanking Burr Blanking Press Blistered Plating Blunder Date “Blow Hole”; Ragged Perforation in Planchet Bonded Coins Bonding Mill Bowtie Clips Brassy Plating Broadstrike: Centered Broadstrike: Cupped Broadstrike: Forced Broadstrike: Uncentered Brockage: Aligned Partial Brockages Brockage-counterbrockage Combination Brockage: Full Brockage: Partial Brockage: From Large Dropped Filling Brockage: From Struck Die Fill Broken Hub Broken Punch “Buffalo” Nickel, 1913; Type I and Type II Business Strike on a Proof Planchet C Canadian “Assisted” Error Coins Canceled and Waffled Coins Capped Die Doubling; Incused Capped Die Doubling, Raised Capped Die Strike: Struck Through a Late Stage Die Cap Catastrophic Collar Failure Catastrophic Die Damage Catastrophic Die Failure Chain Strike Chatter Clash “Cheerios” Dollar; 2000-P Sacagawea Dollar Coin Chinese Fabricated Error coins Chipped Collar Circumferential Cuds Clad Planchet Clash: Counter Type I Clash: Counter Type II Clashed Cap Strike Clash Marks Clash Marks: Multiple Clashed Dies Clashed Dies: 2000P “Superclash” nickel Clip diagnostics (see Blanking and Cutting errors) Clip: Assay Clip: Bowtie Clip: Corner Clip: Curved Clip: Elliptical Clip: Incomplete punch (see Incomplete punch) Clip: Multiple clips and combination clips Clip: Ragged Clip: Straight Coin Struck on Planchet Fragment Coin struck on washers, gears, and other hardware Collar Cuds: Bilateral split collar Collar Cuds: Complete collar break Collar Cuds: Chipped collar Collar Cuds: Irregular collar break Collar Cuds: Retained collar cud Collar Cuds: Rotating collar cud Collar Cuds: Vertical collar crack Collar Damage Collar: Wide Collar Shimmy Compound Misalignment: Horizontal and Rotated Compound Misalignment: Horizontally / Vertically Concentric Lathe Marks Conceptual Design Flaw: Inaccurate Design Conceptual Design Flaw: Misspelling Connected to die crack or split Convexo – Concavo Dies Copper foil: Retained Struck Through Coreless or All Clad Coins Counterbrockages Counterbrockages: Rebound Counterclash Type I Counterclash Type II Counterfeit Dies Counterfeit Second Strike “Non Error” Cracked Planchet Cracked and Peeling Plating Crazed Die Crenellated Rim Crescent Curved Clips Cud Cud: Circumferential Cud: Crescentic Cud Cud: Elongate Cud: Irregular Cud: Ovid Cud: Progression on 1863 Token Cud: Retained on the Anvil Die Cud: Rim Cupped Off-center Strike Curved clips Curvilinear Blanking Burr Cutting Burr D Date: Misplaced Deeply-punched mintmark Defective Punch Deformed Collar Delayed Second Strike Design/Composition Mismatches Design Ablation Errors Detail-Erasing Die Wear Design Berms Design Creep Design Decapitation Error Design-Devouring Die Wear Design Error: 1828 Half Cent with 12 Stars Design Extension Dimples Design Hub Doubling Design Modification; 1797 dime with either 13 or 16 stars Die Alignment Errors: Forced Misalignments Die Attrition Error Die Break Die Break Caused by Impact Die Cap: Obverse Die Cap: Partial off-center Die Cap: Reverse Die Cap: Shifted Strike Die Chip Die Clash Die Clash: Floating Die Clash: Horizontal Misalignment Die Clash: Radically Misaligned Die Clash: Rotated Die Clash: Vertical Misalignment Die Crack: Die Crazing Die Crack: Arcing rim-to-rim die crack Die Crack: Rim to Rim Die Crack: Bi-level die cracks Die Crack: Impact-Induced Die Cracks Die Crazing Die Damage: Die Dent Die Damage: Die Scrapes Die Damage: Die Rings (Tiny Rings, Semicircles, Crescents, And Spirals) Die Damage: Peripheral die damage Die Damage: Die attrition errors Die Dent Die Deterioration/deformation: Die subsidence Die Deterioration/deformation: Die deterioration doubling Die Deterioration/deformation: Incused Doubling Die Deterioration/deformation: Raised Doubling Die Deterioration/deformation: Well-defined rings on Euro coins Die Deterioration/deformation: Reciprocally deformed, convexo-concavo dies Die Deterioration; Parallel Flow Lines Die Exfoliation Errors Die Gouges Die Rings (Tiny Rings, Semicircles, Crescents, And Spirals) Die Scrapes Die Subsidence Different Denomination: Dual Country Different Mintmark Styles Different Placement of Mintmarks Within the Same Year Distended Hub Doubling Distorted Hub Doubling Division Lines Domestic Struck on Foreign Planchet Double Denomination; Same year Double Die Doubled Dies Doubling: Abrasion Doubling: Master Die Doubling: Reduction Lathe Draped Bust dime 1804; with 14 stars on the reverse Dryer Coins “Non Error” Dual Denomination; Different Years Dual Denomination: Same Year Dual Mintmark Dual Misalignment of both dies (hammer and Anvil) E Earliest Inverted Die Setup Early, mid and late-stage counterbrockages Edge Lettering: Absent Edge Lettering: Lettering Die Inclusion Edge Lettering; Two Sets Edge Strikes Edge Strike: with Off-center or Broad Strike Ejection Doubling Ejection Impact Doubling Elliptical clips Elliptical Strike Clips Elongate Cud Embedded Matter: Lettering Die Inclusion Embedded Matter Struck In Encircling Pressure Bumps Exogenous Floating Die Clash Expansion Ripples Experimental Bath and / or Rinse External Disc Impressions External Struck-through Errors (with Cupping) Extrusion strikes: With indents and partial brockages F Fabricated Error Coins: Chinese Feeder Finger Feeder/Ejector Scrapes Filled Collar / Obstructed Collar Field-Restricted Struck-Through Errors Finning Fissure – Ragged & Smooth Flan Flat Field Doubling Floating Collar Clash Floating Die Clash Foldover Strikes Foldover Strike: Axial Fold Foldover Strike: Double or Z-fold Foldover Strike: Outward Fold Foldover Strike: Paraxial Forced Broadstrike Foreign Denomination struck on a U.S. Planchet Foreign Object Chain Strike Freestanding Interior: internal die breaks Full Indent Full Uniface Strike G Gang Punch “Garage Job” Gas Bubbles “Ghost” Images Ghost Images Formed by Grease Grease-Generated Counterbrockage Grease-mediated radial-smear Grease-Mold Doubling H Heavy Die Scratching Hidden Initials And Symbols Horizontal Mint mark Horizontal Misalignment of the Hammer Die Hub Doubling Hubbed-In Debris I Illicitly Applied Die Impressions Improper Annealing Improper Alloy Mix Inaccurate Design: Conceptual Design Flaw Incomplete Plating Incomplete Proof Laser Frosting Incomplete Punch Incuse Machine Doubling Indented by a Smaller Planchet Indent; Full Indent; Partial Inside Corner clip (see Assay Clip) Intentional and Assisted Mint Made Errors Interior Die Break Connected to a Die Crack or Split Interstrike Damage Intra-strike Damage Inverted Die Installation Inverted Hump Inverted Mintmark Invisible strike Irregular Planchet: Heavier than Normal Coin of the Same Denomination Irregular Planchet: Scrap Metal, Feeder Finger Material Irregular Planchet: Scrap Metal, Off-metal Irregular shaped Cuds Isolated Machine Doubling J Janvier Reduction Lathe Jefferson Nickel, 1942; with and without mintmark L Lamination Error: Cracks Lamination Error: Loss After Strike Lamination Error: Loss Before Strike Lamination Fold-over Before Strike Lamination in Clad Coins Lamination: Retained Large Cent with 15 stars on the obverse; 1817 Large Over Small Mintmarks Large and Small mint mark variations used in the same year Late-stage Brockages Liberty Head Nickel, 1883; with and without the word CENTS. Lincoln cent, 1909; with and without designer’s initials (V.D.B.) Longacre’s Doubling Loss of Design Elements Due to Abrasion M Machine Doubling Machine Doubling: Incused Machine doubling in more than one direction Machine Doubling: Isolated Machine doubling on both faces of same coin Machine Doubling: Push Doubling Machine Doubling: Slide Doubling Machine Part Impingement Malaysian “assisted errors” 2005-2007 Malrotation Errors Master Die Doubling Mated Pair Median (bisecting): Split die Mid-stage Brockages Mintmark Variety: Different Styles Mintmark Variety: Dual Mintmark Variety: Horizontal Mintmark Variety: Inverted Mintmark Variety: Large over Small Mintmark Variety: Misplaced Mintmark Variety: Omitted Mintmark Variety :Over Mintmark Mintmark Variety: Phantom Mintmark Variety: Repunched Mintmark: Variety Tilted “Mirror” Brockages Misaligned Collar Clash Misaligned Hubbing (Uncorrected) Mismatched business / proof dies: 1999 $5 and $10 gold eagles W-mintmark Misplaced Date Misplaced Mint mark Missing Clad Layer: After strike Missing Clad Layer; Absent Before Rolling is Completed; Full Missing Clad Layer: Before strike Missing Clad Layer: Both Missing Clad Layer; Partial Misspelled: Conceptual Design Flaw Misspelling on Working Dies Modified Hub Doubling Mule: 1959D Lincoln Cent Mule Clash Mule Clash: 1857 FEC / 1857 SLQ Mule Clash: 1857 FEC / 1857 SLH Mule Clash: 1857 FEC / $20.00 Gold Mule Clash: 1864 2c reverse die clashed with Indian cent obverse die Mule: Coin Die Matched with Private Token Die Mule: Collar mules Mule: Involving Pattern Dies Mule: Mule die larger than normal die and collar) Mule: Pseudo-mules Mule: Regular-issued die muled with commemorative die Mule: Regular-issue die muled with government medal or token die) Mule: Temporal – 2000 Macedonia 1 Denar Mule: Temporal – 2008 Silver Eagle w/ 2007 Reverse Mule: Temporal/Transitional Bi-metallic 50 Roubles Mule: Two different countries Mule: Two anvil dies Mule: Two hammer dies Mule: Washing Quarter / Sacagawea Dollar Mule: Wrong anvil die Mule: Wrong hammer die Mule: Wrong hammer and anvil die Mule: Wrong anvil die – 1993-D and 1999 cent dime mules Mule: Wrong hammer die – 1995 cent/dime mule Multiple Clash Marks Multiple clips and combination clips Multiple Counterbrockages Multiple Misaligned Strikes Multiple strikes: Flipover Multiple strikes: In-collar/out–of-collar Multiple strikes: On-center/Off–center N Near Date; Susan B. Anthony 1979-P dollar No Mintmark Notching Number of Stars on the Obverse of the U. S. Dime, Half Dollar and Dollar; 1796 to 1799 Numerous Closely Spaced Strikes O Obstructed Collar / Filled Collar Obverse Die Cap Off Center Strike Uniface Strikes Off Center Strike with Collar Scar Off Metal: Domestic Off Metal: Unidentified Origin & Purpose (Orphan) Off-metal/Wrong planchet Error: Design struck on larger planchet or coin Offset Hub Doubling Omitted Design Elements on a Working Die Omitted Mintmarks Orange Peel Texture Other Forms of Doubling Outthrust Die Fragments Over Date: Caused by Reengraving or Repunching Over Date: Caused by Second Hubbing Over Mintmark P Partial Collar Partial (off-center) Die Cap Partial Indent Phantom Mint mark Pine Cone (bonded coins) Peripheral Die Damage Peripheral Die Expansion and Erosion Peripheral Doubling Pile-ups Pivoted Die Error Pivoted Hub Doubling Planchet Plated Coins: Intentional/Assisted Error Plating Disturbance Doubling Plating Error: Thick plating Pre-cud die crack (see Arcing rim-to-rim die crack) Pre-strike Damage Pre-strike Damage: Rockwell Test Mark in planchet Pristine Planchets Progressive Indirect Design Transfer on Dimes Progressive Indirect Design Transfer on Foreign Coins Progressive Indirect Design Transfer on Lincoln Cents Proof Finish: Frosting in Wrong Place Proof Finish; Offset Frosting Proof Finish, Frosting Slop-over Proof Strike on a Business Planchet Push Doubling (Machine Doubling) R Radial Flow Lines Radically Misaligned Die Clash Ragged clips Ragged Perforations on a Planchet; “Blow Hole” Raised Clash Marks Rebound Counterbrockages Reciprocally Deformed Dies Recurring die subsidence error Reduction Lathe Doubling Reeding: Abnormal Re-engraved Denomination Re-engraved Designer’s Initials on a 1944-D Half Dollar Re-punched Date Re-punched Denomination Re-punched Design Elements Re-punched Letters Re-punched Mintmark Re-punched Mintmark with Two Different Fonts Retained Collar Cud Retained Cud: on the Anvil Die Retained Cud: on the Hammer Die Retained Cud: Protrudes Beyond Die Face Retained Cuds: with horizontal offset Retained Cuds: with vertical displacement Retained Interior Die Breaks Retained Interior Die Breaks: Connected to die crack or split Retained Interior Die Breaks: Freestanding Retained Lamination Retained Struck-though: Copper foil Retained Struck-through: Die Fill Retained Struck Through Errors Retained Struck-through: Scrap Metal Retained Struck-through: Struck-in Plastic Retouched Date Retouching of Design Elements; 1920-1940 Reverse Die Cap Riddler Rim Cud Rim-restricted Design Duplication Rim-Restricted First Strike Rim-Restricted Second Strikes Rim-to-rim Cud Rockwell Test Mark in die Rockwell Test Mark in planchet Rolled-in scrap: Bristles from descaling brush Rolled-in scrap: Steel sinuous wire Rolled-Thick Planchet Rolled-Thin Planchet Rolling Fold (see Blanking Burr) Rolling-Induced Fissures Rolling Mill Error: Rolled-Thick Planchet Rolling Mill Error: Rolled-Thin Planchet Rolling Mill Error: Rolled-In Patterns and Textures Rolling Mill Error: Rolled-In Cloth Pattern Rolling Mill Error: Rolling Indentation Rotated Die Error: Dynamic Rotation Rotated Die Error: Stable Rotation Rotated Hub Doubling Rotated Mintmark Rotating Collar Cud Rotational Machine Doubling Rusted Dies S Saddle Strike: Die Positioning Head to Base Saddle Strike: Die Positioning Head to Head Saddle Strike: Gap Between Adjacent Dies is Wide Saddle Strike; With Hump Saddle Strike; Without Hump Saddle Strike; On Quarter Dollars Sandwich Strike Scraped-in Debris Second Strike Die Rotation Second Strike Misalignment: Horizontal Second Strike Misalignment: Vertical Second Strike-Same Denomination-Different Years Shattered Die Shattered Die: Broas Brother Baker Store Card Token 1863 Shield Nickel, 1867; with and without “rays” on the reverse Shifted Die Cap Strike Sideneck Strike Single Squeeze Doubled Dies Silver Eagle 2008 w/ 2007 reverse Skidding Coin Errors Skidding Die Errors Skidding Misalignment Slag Inclusion Slide Doubling (Machine Doubling) Slide Zone Ghost Elements Small and Large Mint Mark Variations Used in the Same Year Soft Die Errors Solder on Coins Spackled Dies (Intentionally Applied Grease) Split Dies: Asymmetrical Split Dies: Median Bisecting Split planchet: After strike Split planchet: Before strike Split Plating Split Plating Afterimage Split Plating Doubling Solid Metal Denominational planchet Struck by Bi-metallic Dies Squeezed in Debris “Squeeze Job” Standing Liberty Quarter, 1917; Type I and Type II Stiff Collar Strike Straight clips Stress-Induced Surface Irregularities Stretch Strikes Struck Clad Layer Split Off After Strike Struck-In Die Fragments Struck on ‘Aluminum’ Feeder Fingers Struck on Experimental Planchet; Statehood Quarters Struck on Feeder Fingers Struck on Hardware Struck on Larger Planchet or Coin: Malaysian assisted errors Struck on Emery Disc Struck on Thick Plating Struck on a Blank (“Type I Planchet)” Struck on a Washer Struck Over Pre-Existing Wrong Planchet/Off-Metal Error Struck Through Bulging Die Filling Struck Through a Clad Layer Struck Through a Dropped Filling; Isolated Struck Through: Feed Finger Struck Through: Grease /Oil Struck Through Floating Encrustation Struck Through: Hardware Struck Through a Late Stage Die Cap Struck Through: Cloth Struck Through Shavings Struck Through a Split Die Cap Struck Through a Split or Torn in two by struck-through object Struck Through String Struck Through Wire Stutter Strikes Stutter Strikes (Type I): Stutter Strike (Type II): Stutter Strike (Type III): Stutter Strikes due to Planchet Flexion Subsurface Corrosion Surface Film Effects Susan B. Anthony 1979 dollar; Near Date T Tapered Planchets Thinning of Design Elements Due to Abrasion Tilted Die Clash (see Vertical Misaligned Die Clash) Tilted Die Error Tilted Hub Doubling Tilted Mintmark Totally Separated Mintmarks Trails Transitional Reverse 1940 nickel with reverse of 1938 or 1940 Transitional Reverse 1964-D quarter with the “Type C” reverse of 1965 Transitional Reverse 1969, 1970, and 1970-D dime with 1968 proof reverse Transitional Reverse 1988-D and P Lincoln cents with reverse of 1989 Transitional Reverse 1992-D and P cent with “Close AM” reverse Transitional Reverse 2008-P Silver Eagle Bullion Coin with 2007-P Reverse Two Anvil Dies Two Hammer Dies U Uniface strike (full) Un-plated coins (non-error) Un-plated Lincoln Cents Unstruck Planchet (Type I) Unstruck Planchet (Type II) Upset Mill Error: Abnormal Upset Upset Mill Use of cancelled and defaced dies Use of Flat, Featureless Dies V Vertical Collar Crack Vertically Misaligned Die Error Vickers Test Mark left in die W Waffled Coins Wavy Steps Weak Strike Well-Defined Rings on Euro Coins Wide Collar With and Without Arrows; 1853 U. S. Coins Wrong Date Wrong Metal and off-metal: Wrong Stock Planchet Errors Wrong Metal and off-metal: Coins struck on washers, gears, and other hardware Wrong Ring Wrong Stock – Off Metal X – Y – Z Yanked-Out Fillings Z-fold Zinc Core Zinc Deterioration on Copper Plated Lincoln Cents