INVENTORY

View sold Mint Errors in our Archives


U.S. Mint Errors, Die Trials & Patterns


1904 $20 DOUBLE STRUCK
Rotated 180 Degrees in Collar
NGC MS 62 CAC
BYERS COLLECTION
UNIQUE
$150,000

slabblankslab


1972 Lincoln Cent
Double Denomination
Over 1964 Struck Silver Dime
PCGS MS 63
UNIQUE
$30,000

slabblankslab


1906-D $20 Liberty
Broadstruck (Out of the Collar)
NGC AU 58
UNIQUE
$40,000

slabblankslab


(1857) $20 Double Eagle
Reverse Hub Trial in Lead
Judd Plate Coin
J-A1857-6
Ex: Nagy, Judd, Kosoff, Weinberg
PCGS MS 62
UNIQUE
$35,000

slabblankslab


1972 Eisenhower Dollar
Overstruck by 1972 Cent Dies
PCGS MS 63
UNIQUE
$185,000

slabblankslab


1971-S Proof Ike Dollar
Overstruck on a Bronze
San Francisco Assay Office Medal (17.1g)
NGC PF 69 RED CAMEO
UNIQUE
$75,000

slabblankslab


Ike Dollar
Struck on 1¢ Planchet (3.14g)
NGC PF 66 RED
$25,000

slabblankslab


1977 Lincoln Cent
Struck on an Aluminum Planchet
At The U.S. Mint in Philadelphia
1.04 Grams
NGC MS 60
UNIQUE
$350,000

slabblankslab


Proof 197X-S Ike Dollar
Double Struck on 2 gram
Aluminum Shell Gas Token
PCGS PR 64
2 Known
$50,000

slabblankslab


1974-S Lincoln Cent Mated Pair
Struck by 2 U.S. Cent Obverse Dies
Coin #1 On 1973 Panama Tenth Balboa
Coin #2 Reverse Brockage
NGC MS 66 & MS 64 BN
UNIQUE DISCOVERY
$150,000

slabblankslab
blank
slabblankslab
blank
slabblankslab


Mexico 1916 Oaxaca Gold 60 Pesos
Struck on a U.S. $10 Liberty (1838-1907)
World-Class Numismatic Rarity
NGC AU 53
UNIQUE
$150,000

slabblankslab


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

slabblankSlab


1975-D Roosevelt Dime
Struck on 2.6g Copper Planchet
PCGS MS 62
UNIQUE
$7,500

slabblankSlab


Ike Dollar
Struck on 50¢ Planchet
Rotated Dies
NGC PF 64
$7,500

slabblankSlab


2018-P Roosevelt Dime
Struck on a Steel Planchet
98% Iron / 1.5 Grams
PCGS MS 60
New Discovery
$12,500

slabblankSlab


1972-S Washington Quarter
Double Struck on a Cent Planchet
NGC PR 66 RD
UNIQUE
$12,500

slabblankslab


1972-S Kennedy Half
Double Struck on a Nickel Planchet
NGC PF 66 CAMEO
UNIQUE
$10,000

slabblankslab


1972-S Kennedy Half
Struck on a Cent Planchet
PCGS PR 63 RB
$7,500

slabblankslab


Proof 1972-S Washington Quarter
Double Struck on Roosevelt Dime
Double Denomination
NGC PF 68
$6,500

slabblankSlab


1972 Ike Dollar
Flip Over Double Struck in Collar
PCGS AU 58
$5,000

slabblankSlab


1972-D Ike Dollar
Reverse Struck Thru Capped Die
NGC MS 66
$5,000

slabblankSlab


1972 Kennedy Half
Struck on an Elliptical Planchet
PCGS MS 65
$5,000

slabblankSlab


1972-S Kennedy Half
Obverse Die Break
NGC PF 69⭑ CAMEO
$5,000

slabblankSlab


1972 Lincoln Cent
Struck Over Struck 1971 Lincoln Cent
PCGS MS 62 BN
$5,000

slabblankSlab


1972-D Kennedy Half
Obverse Indented by 1C Planchet
NGC MS 64
$4,000

slabblankSlab


1972-D Ike Dollar
40% Clipped Planchet
PCGS MS 64
$3,500

slabblankSlab




World Mint Errors, Die Trials & Patterns



1985 Canada National Parks Proof $100
Unofficial Platinum Strike Uniface
(Platinum Mint Error or Pattern/Die Trial)
90% Pt, 10% Rh, 16.73 Grams
PCGS PR 67 Deep Cameo
UNIQUE
$40,000

slabblankslab


1741 L V Peru Gold 8 Escudos
Triple Struck Flipover
NGC MS 62
UNIQUE
$75,000

slabblankslab


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
Plate Coins in Forschner
Forschner #34.1 Gold & #34.3 Gold
PCGS MS65 and MS64
1 of Only 2 Known Sets
$100,000

slabblankslab


1824 Great Britain Half Sovereign
GOLD Obverse Die Cap
Ex: Eliasberg
NGC MS 64
UNIQUE
$50,000

slabblankslab


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
$100,000

slabblankslab


(1904) Belgium Franc
GOLD Obverse Die Trial
1904 Design Overstruck on 1903 Design
Struck on Oversized Piedfort Planchet
(Regular Issue Was Struck in Silver)
NGC MS 61
UNIQUE
$40,000

slabspaceslab


1911 Great Britain 5 Pound
Uniface Obverse Die Trial
Struck In Lead From PROOF DIE
Width 44.32mm, Thickness 5.69mm
Authenticated by The Royal Mint
Pedigreed To The C.M. Kraay Collection
NGC MS 60
UNIQUE
$15,000

slabblankslab

Terms of Saleblank|blankView our Archives

Coin Inventory  |  Archives  |  Calendar  |  Contact
Terms/Info  |  News  |  Glossary  |  About  |  Home
Mike Byers Fine Art eBay
World's Greatest Mint Errors Mint Error News
MIKE BYERS INC
8545 W. Warm Springs Rd, Ste A-4 #340, Las Vegas, NV 89113 mike@mikebyers.com   |   714.914.6415
Copyright © 1998-2022 Mike Byers Inc. All rights reserved. Website by Sam Rhazi Web Design. Legal Notice