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Unpublished & Previously Unknown!!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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Front Page Coin World!!
July 8, 2024 Cover Story


Unique 1936 Commemorative Half Dollar
Plaster Model and Galvanos Surface After 88 Years

1936 Long Island Tercentenary
U.S. Commemorative Half Dollar
14-Inch Reverse Plaster Model
10-Inch Obverse & Reverse Galvanos

Privately Owned by Designer & Sculptor
Howard Weinman's Family Since 1936
$150,000

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Copyright story reprinted by permission from Page 1 and Page 39 of the July 8, 2024 issue of COIN WORLD, Sidney, OH (coinworld.com)


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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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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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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Mated Pair of Proof Ike Dollars
Struck Off-Center on 1¢ Planchets
NGC Proof 67 RB
UNIQUE
$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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194X-S Australia Florin
On A U.S. Silver 5 Cent Planchet
Struck at the San Francisco Mint
4.9g Wartime Planchet
NGC MS 62
UNIQUE DISCOVERY
$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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1907 $20 Liberty Gold
DOUBLE STRUCK
Second Strike Partial Collar
NGC MS 62
1 of Only 4 Known
$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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1898 Barber Dime
Obverse Die Cap
Uncentered / Off-Center
PCGS MS 61
UNIQUE
$20,000

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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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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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