INVENTORY

View sold Mint Errors in our Archives


Mint Errors, Die Trials & Patterns


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

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19XX-S Walking Liberty Half Dollar
Double Struck 90% Off-Center
(Actually Struck 85% Off-Center)
Die Struck Both Sides
PCGS AU 53
Rare S-Mint With Only 3 Known
$25,000

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

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1980-D Lincoln Cent
Struck on 90% Silver Dime Planchet 2.5g
Silver Cent
Extremely Rare Transitional Mint Error
NGC MS 64
1 of Only 3 Known
$12,500

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1980-D Lincoln Cent
Struck on 90% Silver Dime Planchet 2.5g
Silver Cent
Extremely Rare Transitional Mint Error
NGC MS 64
1 of Only 3 Known
$12,500

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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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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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1855-O Type 2 Gold Dollar
Double Struck
Second Strike Off-Center

NGC AU Details (Damaged)
UNIQUE
$40,000

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

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

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

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

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1991 $50 Gold American Eagle
Reverse Filled Dies
(75% Struck Thru Grease)

Signed by Miley Frost, Designer of Reverse
NGC MS 67
$7,500

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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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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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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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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
$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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(2011-2013) U.S. 5¢ Test Strike Pair
Including 1 of Only 2 Known Proof Test Strikes
Judd #2210 - Mint Cancelled
New Martha Washington Die Design
Struck at the U.S. Mint in Philadelphia
77% Cu, 20% Ni, 3% Mg - NGC (Mint State)
60.5% Ni, 32.5% Cu, 6.8% Fe - NGC (Proof)
$7,500

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

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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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1938-S Lincoln Cent
Struck on Silver 10 Cent Planchet
Ex Milt Cohen Collection
NGC XF 45
UNIQUE
$12,500

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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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1973 Canadian Commemorative Quarter
Overstruck by 1978 Canadian Cent Dies
PCGS MS 63
UNIQUE
$10,000

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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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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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1944 Lincoln Cent - Wheat Reverse
Obverse Mirror Brockage
CAC® Rare Coin Market Review Cover Coin
CACG AU50BN
One of Only Two Known
$12,500

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Indian Head Cent
Counterbrockage & Clashed Cap Brockage
PCGS VF 20
Extremely Rare
$4,000

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194X Lincoln Cent
Counterbrockage & Clashed Cap Brockage
NGC MS 63 BN
Extremely Rare
$3,500

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1987 Lincoln Cent
Edge Strike & Foldover Strike
PCGS MS 65 Red
Extremely Rare
$2,500

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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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1999 Lincoln Cent
Overstruck on 1996 Lincoln Cent
Dual Date on the Same Denomination
3 Years Apart!

PCGS MS 63 RB
UNIQUE
$8,500

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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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1901 Luxembourg 10 Centimes
Deep Obverse Die Cap
(The Hammer Die was the Reverse Design)

NGC MS 66
UNIQUE
$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
$8,500

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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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'1834' Belgium 40 Franc
Obverse Hub Trial Strike
King Leopold I
White Metal Restrike
Pedigreed to the Brussels Mint in Belgium
PCGS MS 62
UNIQUE
$7,500

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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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Spain 1857 Gold 100 Reales
7-Pointed Star - Seville Mint
Flipover Double Struck, Partial Collar
PCGS MS 65
UNIQUE
$12,500

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

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1910 Canada Large Cent
Double Struck
Rotated in Collar

NGC XF 45 BN
Extremely Rare
$4,000

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1977 Great Britain 25 Pence
Silver Jubilee of Reign Crown
Obverse Indented by 1 Pence Planchet
NGC MS 65
1 of Only 2 Known
$3,500

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(2000) Maryland State Quarter
On 51% Clipped Fragment
PCGS MS 67
Rare
$3,500

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1960-P Small Date Lincoln Cent
Triple Struck All Off-Center
Only Struck with the Obverse Die (Uniface Reverse)
PCGS MS 63 RB
UNIQUE
$3,500

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Byzantine Empire Gold Solidus AD 613-641
Heraclius and Heraclius Constantine
Struck Over Brockage
On Clipped 4.33g Planchet

NGC Ch AU
Very Rare
$3,500

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(1848-1864) German Pattern Taler
German States: Bavaria
Maximilian II
Proof Silver Obverse Die Trial
PCGS PR 63 Deep Cameo
Extremely Rare - 1 of Only 3 Certified
$5,000

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1924-A Germany 3 Mark
Weimar Republic
Broadstruck
PCGS MS 64
Extremely Rare
$3,000

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1911-D Germany 3 Mark
Bavaria - Munich Mint
Commemorative Coin Leopold I
Broadstruck
PCGS MS 65
Extremely Rare
$3,000

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(1919-1922) Germany 50 Pfennig
Weimar Republic
Struck 40% Off-Center
KM-27 Aluminum
NGC MS 62
Rare
$1,000

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1925-P Vancouver Commemorative Half Dollar
Partial Collar Strike
PCGS MS 63
1 of Only 3 Known
$1,500

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1980 Spain Peseta
Struck 30% Off-Center
On an Off-Metal Brass Planchet

(Regular Issue is Aluminum-Bronze)
NGC MS 64
UNIQUE
$1,250

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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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