MIKE BYERS INC
mike@mikebyers.com
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714.914.6415
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
Proof 1891-O Seated Liberty Dime
Unique Branch Mint Proof
Listed in the
2024 Red Book 9
th
Edition
NGC PF 66
$350,000
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Unpublished & Previously Unknown!!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
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
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
1971-S Proof Eisenhower Dollar
Overstruck on a Bronze
San Francisco Assay Office Medal
(17.1g)
NGC PF 69 RED CAMEO
UNIQUE
$100,000
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
1976-S Proof Bicentennial Eisenhower Dollar
Double Struck
Second Strike Off-Center
NGC PF 64⭑
UNIQUE
$100,000
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
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
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
1921 Peace Dollar Plaster
Designed & Sculpted by Anthony de Francisci
UNIQUE in Private Hands
$60,000
1921 Peace Dollar Splasher
Judd A1921-1
High Relief
PCGS UNC Detail
UNIQUE
$60,000
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
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
Mated Pair of Proof Ike Dollars
Struck Off-Center on 1¢ Planchets
NGC Proof 67 RB
UNIQUE
$50,000
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
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
1855-O Type 2 Gold Dollar
Double Struck
Second Strike Off-Center
NGC AU Details (Damaged)
UNIQUE
$40,000
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
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
Jefferson Nickel Die Trial
Reverse Electrotrial
by Anthony De Francisci
Judd #JC1938-1
PCGS MS 62
UNIQUE
$40,000
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
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
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
1907 $20 Liberty Gold
DOUBLE STRUCK
Second Strike Partial Collar
NGC MS 62
1 of Only 4 Known
$25,000
1944 Lincoln Cent
Overstruck on a 1944 Netherlands 10C
Double Denomination
NGC XF 45
UNIQUE
$25,000
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
1898 Barber Dime
Obverse Die Cap
Uncentered / Off-Center
PCGS MS 61
UNIQUE
$20,000
Proof 1973-S Kennedy Half Dollar
Die Piece and Die Break Error Mated Pair
NGC PF Cameo
1 of 2 Known
$20,000
Eisenhower Dollar
Struck 35% Off-Center
On Taiwan $1 Planchet
PCGS MS 64
UNIQUE
$15,000
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
1845 Great Britain Shilling
Queen Elizabeth Young Head
15% Off-Center
Die Cap
PCGS AU 58
UNIQUE
$7,500
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