Category Archives: Unique

PCGS Grades 1st New 1795 Flowing Hair Half Dollar Variety Discovered in Nearly a Century

New 1795 Flowing Hair Half Dollar Graded by PCGS as an F15 and Designated a “Discovery Coin”   It still pays to scrutinize all coins for something new or unusual, even those belonging to a series as well studied as the Flowing Hair Half Dollar. Struck by the United States Mint from 1794 through 1795, […]

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Mike Byers Mint Error News – Royal Mint Plaster for Great Britain 1983 One Pound Coin

Official Royal Mint Plaster for the Great Britain 1983 One Pound Official Adopted Design by Eric Sewell (Former Chief Engraver of the Royal Mint) Approved by Queen Elizabeth II Possibly Unique   One Pound Coin Plaster by Mike Byers for Mint Error News …… This is a fascinating official Royal Mint plaster that was designed […]

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Mike Byers Mint Error News – Unique 1973-S Kennedy Half Dollar Overstruck on 1973-S Washington Quarter

Only Known Proof U.S. Kennedy Half Dollar Struck on Any U.S. Coin Double Denomination NGC PF 67 Cameo UNIQUE DISCOVERY COIN   By Mike Byers for Mint Error News …… This newly discovered and certified Proof Kennedy Half Dollar on a struck Washington Quarter is the only known Kennedy Half Double Denomination on any Proof […]

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Mike Byers Mint Error News – Unique 1970-S Proof Washington Quarter Overstruck on Canadian Quarter

King George V (1911-1936) This unique 1970-S Proof Quarter from the United States was overstruck on a Canadian Quarter that circulated during the reign of King George V from 1911-1936. It was authenticated and certified by NGC as PR64. This was most likely from the group of San Francisco Proof Errors that was auctioned by […]

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Mike Byers Mint Error News – Unique 1970-S Proof Washington Quarter Overstruck on Canadian Quarter

King George V (1911-1936) Mint Error This unique 1970-S Proof Quarter mint error from the United States was overstruck on a Canadian Quarter that circulated during the reign of King George V from 1911-1936. It was authenticated and certified by NGC as PR64. This was most likely from the group of San Francisco Proof Mint […]

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One of a Kind: Some Unique Ancient Coins

CoinWeek Ancient Coin Series by Mike Markowitz for CoinWeek ….. “This is a very rare coin; only two examples known! Unfortunately, the only guy in the world who cares has the other one.” — Classic Numismatic Joke (source unknown) “Unique” means one of a kind. The ultimate rarity. The rarest anything can be. This designation, […]

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Mike Byers Mint Error News – Unique 1863 California Fractional Gold 25¢ Overstruck on 1860/50

1863 Round Liberty Gold 25¢ California Fractional Gold BG-820 Overstruck on 1860/50 BG-819 NGC MS 61 UNIQUE DISCOVERY COIN   By Mike Byers for Mint Error News …… This is a unique 1863 California Fractional Gold 25¢ overstruck on a previously struck 1860/50 Gold 25¢. In fact, it is the only known overstruck California Fractional […]

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Mike Byers Mint Error News – Unique Multiple Error Clad Ike Dollar Struck on Quarter Planchet

Also Features a 70% Reverse Indent by a QUARTER Planchet   By Mike Byers for Mint Error News …… All Ike dollar off-metals are highly prized by serious collectors of major U.S. Mint Errors and collectors of Ike dollars. The only two that are occasionally available are the Ike dollar struck on a Philippine 1 […]

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Mike Byers Mint Error News – Unique Obverse & Reverse Die Trials for Spain’s 1856 100 Reales

Struck in Gilt Copper – Uniface – UNIQUE & UNLISTED NEW DISCOVERY   This is a unique and spectacular set of obverse and reverse die trials for Spain’s 1856 Proof gold 100 Reales. They combine rarity (unique), history (struck to test the dies for the newly designed 100 Reales), and mystique (Queen Isabella II approved […]

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Mike Byers Mint Error News – Unique 1974-S Aluminum Lincoln Cent Obverse Struck on Philippine 1 Sentimo Planchet

The Only 1974 Aluminum Cent That Can Be Privately Owned   The 1974 aluminum cent is world famous. Proposed in 1973 and struck in 1974, it was never released into circulation. The United States Mint distributed several to members of Congress, but they were recalled by Mint Director Mary Brooks and destroyed. One example struck […]

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Mike Byers Mint Error News – Unique Rotated Double Struck 1904 $20 Gold Coin

By Mike Byers for Mint Error News …… Major mint errors on U.S. gold coins are extremely rare. And of these, there are only a few known that are double or triple struck. One phenomenal example is this double stuck 1904 $20 rotated 180 degrees in the collar. Considerable detail remains from the initial strike […]

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Mike Byers Mint Error News – Unique Proof Half Sovereign Pattern Mule with Sixpence Obverse

By Mike Byers for Mint Error News …… This proof Half Sovereign off-metal mule pattern encompasses a combination of history, rarity, and condition. This piece is the ONLY known certified example and the ONLY known piece as well. The obverse was struck from the regular obverse die intended for the Sixpence issue. The reverse was […]

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Mike Byers Mint Error News – Unique Lauer Queen Victoria Gold Pattern Coin

(1887) Great Britain Queen Victoria Lauer Pattern in Gold Uniface Obverse Die Trial Ex. Murdoch Collection (1904) – UNIQUE By Mike Byers for Mint Error News …… Several patterns struck in gold with new designs were submitted in 1887 for the jubilee of Queen Victoria. Her young head portrait had been used for 50 years […]

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Mike Byers Mint Error News – Unique Great Britain Silver Crown Die Trial Piedfort Pattern

1845 Great Britain Crown Young Head Silver Die Trial Piedfort Pattern Uniface Obverse NGC MS 65 – UNIQUE, UNLISTED & UNRECORDED By Mike Byers for Mint Error News …… NGC recently authenticated and certified this unique Great Britain Silver Crown Die Trial Piedfort Pattern. It was struck in 1845 with the “Young Head” portrait that […]

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Mike Byers Mint Error News – PCGS Certifies Unique German Gold Obverse Trial Strikes

By Mike Byers for Mint Error News …… This unique, historical and museum-quality set of gold Coronation Die Trial Strikes was just authenticated and certified by PCGS. It is amazing that, after 500 years, these gold die trials have remained together, intact and preserved in gem Mint State condition. They are five or 10 Ducat […]

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Mike Byers Mint Error News – NGC Certifies Unique Great Britain Lead Die Trial

By Mike Byers for Mint Error News …… This is the only known 1911 Great Britain 5 Pound Die Trial. It was struck on March 14, 1911, on an oversized lead planchet with a width of 44.32 mm and is 5.69 mm thick. It is a uniface die trial of the finished obverse die used […]

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Mike Byers Mint Error News – NGC Certifies Unique 25¢ Feeder Finger From Denver Mint

By Mike Byers for Mint Error News …… This is the only known full-size feeder finger for any U.S. denomination that has not been struck by coin dies. There are U.S. feeder fingers known that were struck by a private mint producing tokens and metals, that used the feeder fingers as the blank planchets. In […]

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Heritage Auctions – Seldom Seen Selections: Unique “The Wheele Goes Round” Higley Copper

Our upcoming August 13-20 ANA Signature Auction will feature a unique colonial coin: a Higley Copper with a wheel device and the legend THE WHEELE GOES ROUND. This unique Freidus 4-C is the only known Higley copper of this distinctive type: the only such Higley copper and the pivotal coin for the ultimate Higley collection. […]

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Unique Ronald Reagan Presidential $1 Mint Error Discovery Coin Available at GreatCollections

Only known piece with missing edge lettering By CoinWeek …. As many collectors know, after the first few Presidential $1 coins were issued in 2007, some of them (most famously the George Washington golden dollar) did not feature the national motto “In God We Trust” inscribed on the edge as mandated by law. These “Godless” […]

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World Coin News – PCGS Authenticates Unique Australian Overdate Sovereign

Professional Coin Grading Service (PCGS) has authenticated the first known 1868/6 overdate Australian sovereign. The historic gold coin depicting a young Queen Victoria recently was submitted by a sharp-eyed professional numismatist on the Australian island state of Tasmania, and it now is certified PCGS AU58+. “The sovereigns from 1855 to 1870 are among the most […]

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NGC Certifies Newman’s Unique 1792 Washington President Gold Eagle

Numismatic Guaranty Corporation® (NGC®) has certified the late Eric P. Newman’s most cherished coin: the unique 1792 Washington President gold eagle that researchers believe was presented to George Washington and carried by him as a pocket piece. Graded NGC XF 45★, the coin will be sold without reserve by Heritage Auctions on August 16, 2018, […]

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Perth Mint’s Unique $2.8 Million Trilogy Sold

The Perth Mint’s one and only $1.8 million Australian Trilogy coin collection has now been sold. The pinnacle of The Perth Mint’s long term association with Rio Tinto and Argyle Pink Diamonds, The Australian Trilogy is an incomparable combination of precious metals and rare natural fancy colored diamonds unearthed from the Argyle Diamond Mine in […]

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NGC Grades Rare Canadian Silver Maple Leaf Error

A unique Canadian Maple Leaf error is certified by NGC Numismatic Guaranty Corporation® (NGC®) has authenticated and graded an extremely rare Canadian Silver Maple Leaf error. This 2005 $5 Silver Maple Leaf was incorrectly struck on a 25.1g .9999 silver planchet intended for commemorative silver dollars instead of a 31.1g .9999 silver planchet used for […]

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U.S. Coins – Glass Penny Sells for $70,500 at FUN Show Heritage Auction

Ultra-rare glass coin was World War II experiment The only known surviving intact experimental all-glass penny, manufactured in 1942 as a possible alternative to copper that was urgently needed during World War II, sold for $70,500 in a public auction conducted in Fort Lauderdale, Florida and online by Dallas, Texas-based Heritage Auctions on Friday, January […]

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Rare US Coins – Glass Cent Pattern Discovered

By Everett Millman – Gainesville Coins ……. Amid the nationwide mobilization effort for the Second World War, the United States Mint was forced to explore using new materials for its low-denomination coins as nickel and copper supplies were diverted to war production. This led the mint to replace the normal composition of the five-cent nickel […]

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Professor’s 1979 Chemistry Nobel Prize Gold Medal Offered by Heritage Auctions

Nobel Prize medal presented to chemist Georg Wittig for 1954 discovery of “The Wittig Reaction” is accompanied in October 19, 2016 auction by four other prestigious medals awarded to the noted German researcher and educator The historic 1979 Nobel Prize gold medal for chemistry awarded to Professor Georg Wittig (1897 – 1987) of Germany will […]

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Classic US Coins – Art and Numismatics

Collecting coins based on art is an endless journey and one that should give you a different perspective of the hobby By Jeff Garrett for Numismatic Guaranty Corporation (NGC) …… Last week I had the pleasure of traveling with a friend to Cornish, New Hampshire on a very interesting numismatic road trip. Cornish, New Hampshire […]

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Perth Mint: Million Dollar Kimberley Coin Sold in Record Time

Following the launch of the world-exclusive Kimberley Treasure coin, the Perth Mint has sold the spectacular masterpiece to an international buyer within just 48 hours of its release. Crafted from one kilogram of 99.99% pure gold and featuring a radiant 0.54 carat red diamond from the famed Argyle Diamond Mine in the East Kimberley region […]

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Newly Discovered, Unique Dual-Plugged 1795 Silver Dollar Offered by Heritage Auctions

Authenticated by NGC, this discovery coin will be featured in the Heritage Platinum Night Auction at the ANA Anaheim World’s Fair of Money, August 10, 2016 A first-of-its-kind, recently-discovered 1795 U.S. Flowing Hair silver dollar with two separate “plugs” has been authenticated by Numismatic Guaranty Corporation (NGC) and will be a featured highlight of the […]

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