INVENTORY

View sold Mint Errors in our Archives


Mint Errors, Die Trials & Patterns
(sorted by highest price first)


UNIQUE SPECIMEN:
$5 1873 Closed 3
Experimental Finish
NGC SP 64
$400,000

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Proof 1891-O Seated Liberty Dime
Unique Branch Mint Proof
Listed in the 2024 Red Book 9th Edition
NGC PF 66
$350,000

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Uncancelled Costa Rica Proof Obverse Die
Made by the U.S. Mint in Philadelphia
For the Extremely Rare 1897 2 Colones
Struck at the Philadelphia Mint
Total Mintage of 500 Proof Gold Coins
Certified by NGC
UNIQUE NUMISMATIC DISCOVERY
Unpublished & Previously Unknown!!
$150,000

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1904 $20 DOUBLE STRUCK
Rotated 180 Degrees in Collar
NGC MS 62 CAC
BYERS COLLECTION
1 of 4 Known
$150,000

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1971-S Proof Eisenhower Dollar
Overstruck on a Bronze
San Francisco Assay Office Medal (17.1g)
NGC PF 69 RED CAMEO
UNIQUE
$100,000

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1972-S Proof Ike Dollar "Clover Leaf"
Mated Set on Nickel and Cent Planchets
NGC PROOF 65
UNIQUE
$100,000

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1973-S Proof BRONZE Eisenhower Dollar
Broadstruck on Bronze Planchet
PCGS PR 62 RED CAMEO
(Previously NGC PF 61 CAMEO)
BYERS-FROHMAN
UNIQUE
$100,000

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1976-S Proof Bicentennial Eisenhower Dollar
Double Struck
Second Strike Off-Center
NGC PF 64⭑
UNIQUE
$100,000

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Gold Obverse Trial Strikes
World-Class Numismatic Rarity
Matthias II - Holy Roman Emperor
c.1612 Gold Coronation Medals
Matthias II and Anna
German States - Frankfurt am Main
Listed & Illustrated in Forschner
PCGS MS65 and MS64
1 of Only 2 Known Sets
$100,000

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Martha Washington Obverse Die
Used to Strike Half Dollar Experimental
Test Pieces for U.S. Judd #2131
NGC Certified & Encapsulated
1 of Only 2 Known In Private Hands
$75,000

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Martha Washington Reverse Die
Used to Strike 1 Cent Experimental
Test Pieces for U.S. Judd #2180
NGC Certified & Encapsulated
UNIQUE in Private Hands
$75,000

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1921 Peace Dollar Plaster
Designed & Sculpted by Anthony de Francisci
UNIQUE in Private Hands
$60,000

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1921 Peace Dollar Splasher
Judd A1921-1
High Relief
PCGS UNC Detail
UNIQUE
$60,000

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1972-S Proof Ike Dollar Mated Pair
Ike Dollar Struck on a 1¢ Planchet
mated with an
Ike Dollar Struck on a 10¢ Planchet
NGC PROOF 67
$60,000

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Uncancelled Costa Rica Obverse & Reverse Dies
Made by the U.S. Mint in Philadelphia
For the 1897 Gold 10 Colones
Struck at the Philadelphia Mint
Certified by NGC
Unique in Private Hands
$50,000

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Uncancelled Costa Rica Obverse & Reverse Dies
Made by the U.S. Mint in Philadelphia
For the 1897 Gold 20 Colones
Struck at the Philadelphia Mint
Certified by NGC
Unique in Private Hands
$50,000

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Proof Ike Dollar Mated Pair
Ike Dollar Struck on a 1¢ Planchet
mated with an
Ike Dollar Struck on a 10¢ Planchet
NGC PROOF 65
$50,000

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Charles A. Lindbergh
14-Inch Obverse Bronze Galvano
For The 1928 Congressional Gold Medal
Designed and Sculpted by Laura Gardin Fraser
UNIQUE in Private Hands
$50,000

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1855-O Type 2 Gold Dollar
Double Struck
Second Strike Off-Center
NGC AU Details (Damaged)
UNIQUE
$40,000

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1932 Washington Quarter Reverse Plaster Model
Designed and Sculpted by Laura Gardin Fraser
Plaster & Original Photograph from her Estate
Adopted Reverse Design for the 1999 $5 Gold
George Washington Commemorative
UNIQUE 11½" Plaster Model
$40,000

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1970-S United States Proof Washington Quarter
Overstruck on a
1941 Canadian George VI Silver Proof Quarter
PCGS PROOF 66 (previously NGC PF 65)
UNIQUE
$40,000

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Jefferson Nickel Die Trial
Reverse Electrotrial
by Anthony De Francisci
Judd #JC1938-1
PCGS MS 62
UNIQUE
$40,000

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1861 German States Bavaria Medal
Prince Adalbert (Brother of King Maximilian II)
Gold Off Metal Strike
"First Test" (Trial Strike)
Hand Engraving from the Bavarian Mint
Presented to the House of Wittelsbach
Pedigreed to Prince Adalbert
UNLISTED IN GOLD AND UNIQUE
World-Class Numismatic Rarity
16 Ducats   54.43 grams   42.59 mm
Hauser-536 (in Tin & Bronze)
PCGS SPECIMEN 62
$40,000

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1942-S Wartime Lincoln Cent
Struck on a Bronze Planchet
95% Cu - 4% Zn - 1% Sn
2.5 Grams
NGC MS 62 Brown
UNIQUE DISCOVERY COIN
$35,000

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Charles A. Lindbergh
14-Inch Plaster Model of the Reverse
For The 1928 Congressional Gold Medal
Designed and Sculpted by Laura Gardin Fraser
$35,000

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1977 Canada Silver Jubilee $100
Struck on 8.1 gram 50c Planchet
(Regular Issue Struck In Gold)
PCGS PR 67 Deep Cameo
UNIQUE
$35,000

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1896-S Liberty Head $20
Obverse Struck Thru
(75% Struck Thru Grease/Filled Dies)
NGC Mint Error
$25,000

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1907 $20 Liberty Gold
DOUBLE STRUCK
Second Strike Partial Collar
NGC MS 62
1 of Only 4 Known
$25,000

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1968-S Kennedy Half Dollar
Struck on 125 grain (8.1 gram) Magnetic Planchet
PCGS Proof 62
Piece de Caprice
Ex Fred Weinberg Collection
UNIQUE
$25,000

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Kennedy Half Dollar
Struck on a Copper-Zinc Planchet
83% Cu, 17% Zn
Weight 2.4 grams
Likely Struck on an Experimental Cent Planchet
NGC MS 64 RB
UNIQUE
$25,000

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1944 Lincoln Cent
Overstruck on a 1944 Netherlands 10C
Double Denomination
NGC XF 45
UNIQUE
$25,000

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Bolivia 1942 50 Centavos
Struck at the Philadelphia Mint
On a U.S. Wartime Nickel Planchet
4.9g - Whittier Collection
NGC MS 65
UNIQUE
$25,000

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1974 Canada $5 Olympic Commemorative
Off-Metal Mint Error
Struck on Experimental Silver Planchet
Intended for Uniface Essay Trial Strikes
PCGS MS 64
UNIQUE
$25,000

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Proof 1973-S Kennedy Half Dollar
Die Piece and Die Break Error Mated Pair
NGC PF Cameo
1 of 2 Known
$20,000

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1976-S Proof Bicentennial Silver Eisenhower Dollar
Struck On Outer Clad Layer
NGC
UNIQUE
$15,000

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Eisenhower Dollar
Struck 35% Off-Center
On Taiwan $1 Planchet
PCGS MS 64
UNIQUE
$15,000

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Germany - Federal Republic 5 Cent Euro
Two-Headed Off-Metal Pattern
Struck with Two Obverse Dies
On a Copper-Nickel Planchet
PCGS SP 63
1 of Only 2 Known
$10,000

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1845 Great Britain Shilling
Queen Elizabeth Young Head
15% Off-Center Die Cap
PCGS AU 58
UNIQUE
$7,500

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Great Britain 2023 5 Pound
2oz .999 Silver Planchet
Tudor Beasts - Bull of Clarence
Struck on a 2 Pound 1oz Planchet 39.2g
NGC MS 68
Unique Off-Metal Discovery
$7,500

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1969 Hungary Gold 50 Pengő
Double Struck with Rotation on Reverse
1000th Anniversary of Saint Stephen
Extremely Low Mintage of Only 100 Struck
NGC MS 66 Deep Prooflike
UNIQUE
$7,500

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2007-D Jefferson Nickel Reverse Die Cap
1 of Only 2 Known Die Caps
On the Newly Designed Jefferson Nickel
PCGS MS 63
$7,500

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1861-B Germany Taler
Saxony KM# 1213 Mule
The Only Certified Example by NGC or PCGS
NGC MS 63
Rare
$7,500

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Great Britain 1967 Florin Mule
Struck With 2 Reverse Dies
Piece de Caprice
NGC MS 61
1 of Only 2 Known
$7,500

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Spain 1857 Gold 100 Reales
7-Pointed Star - Seville Mint
Flipover Double Struck, Partial Collar
PCGS MS 65
UNIQUE
$6,000

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1943 Lincoln Steel Cent
Split Before Strike (1.42 Grams)
Uniface Obverse
PCGS MS 62
UNIQUE
$5,000

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1782A Austria 1 Kreuzer
Multi-Struck Obverse Die Cap
Multiple Brockages on Reverse
NGC MS 64 BN
UNIQUE
$5,000

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1998 Canadian 10 Cent
Struck on Unplated Multi-Ply Planchet
Intended for 1999 Test Pieces
PCGS MS 64 RD
ex Fred Weinberg
One of Only Two Known
$5,000

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1876 Germany 1 Mark
Obverse Indented by a 20 Pfennig Planchet
NGC MS 63
UNIQUE
$5,000

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2008-P Andrew Jackson Presidential Dollar
Doubled Edge Lettering
PCGS MS 65
UNIQUE
$4,000

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Unique Plaster Model and Galvano
Unadopted Design by Heinz Rodewald
For the 1986 German 5 Mark
Frederick the Great Commemorative
$2,500

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1936 Long Island Tercentenary
U.S. Commemorative Half Dollar
Minor Curved Clip @ 11:00
NGC MS 64
UNIQUE
$1,500

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