Category Archives: Unique coins

Early U.S. Proof Coins in Stack’s Bowers August 2023 Auction

Stack’s Bowers Galleries is offering a pair of extremely rare early U.S. Proof coins from the Capped Bust series in their August 2023 Global Showcase Auction. Presented as part of the Legacy Collection, these rarities include a Proof-64 (PCGS) 1821 Capped Bust quarter rated Rarity-7+ and a Proof-58 (PCGS) 1828 Capped Bust half dollar (O-118a) […]

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Possibly Unique Farouk French Gold Proof Set in Stack’s Bowers Hong Kong Auction

By Jeremy Bostwick – Senior Numismatist & Cataloger, Stack’s Bowers …… There are extremely rare occasions when this “hobby of kings” allows one the chance to actually own something that was once held by royalty. In an impressive lot in our spring Hong Kong auction, such a chance will present itself. A seemingly unique four-piece […]

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PCGS Grades New 1800 Draped Bust Half Dime Variety

By Dylan Dominguez and Edward Van Orden for PCGS …… In the world of numismatics, one often hears the enthusiastically exclaimed, “You never know what’s going to come through the door!” We at PCGS are excited at the prospect of this old adage every day, and what better than a newly discovered variety from a […]

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Six Gold Coins From the Bass Collection I Liked: An Analysis

By Doug Winter – RareGoldCoins.com …… CoinWeek Content Partner On September 29, 2022, the first part of four sales featuring the Harry Bass Core Collection was sold at a live (!) auction held in Long Beach, California by Heritage Auctions. The sale was small with 106 total coins sold; of these, just 71 were regular-issue […]

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Rare Modern US No Mint Mark Proof Coins

By Bullion Shark LLC …… Modern Proof coins that were struck at the San Francisco Mint, as most Proof coinage has been since 1968, normally bear an “S” mint mark. A small number of these coins have surfaced over the years that lack the mint mark, and they are among the greatest rarities of modern […]

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The Mystery of the Only Known 1870-S Half Dime

By Bullion Shark LLC …… In 1870, when a new mint facility was being built in San Francisco for the “Granite Lady“, as the building was known, there was a plan to place a complete set of 1870 coins struck in San Francisco in the building’s cornerstone. The only problem is that not every denomination […]

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Unique Queen’s Beasts Gold Die Trial Among New Coins at Atlas Numismatics

By Atlas Numismatics …… Atlas Numismatics is pleased to offer our latest selection of coins and medals for your consideration. We hope that you may find something of interest for your collection and look forward to hearing from you if have any questions. Atlas Numismatics remains actively interested in purchasing individual items and whole collections if you […]

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Royal Canadian Mint Opulence Coin Collection Features Pink Diamonds

On May 4, the Royal Canadian Mint launched the Opulence Collection, exclusive numismatic masterpieces of exceptional craftsmanship featuring some of the world’s rarest precious stones: pink diamonds from the famed Argyle Mine. These jewels are the crowning element of pure gold and platinum coins that truly redefine rare. This new collection, headlined by the one-of-a-kind […]

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Mike Byers Mint Error News – 1942-S Lincoln on Curaçao Cent Planchet

By Mike Byers for Mint Error News …… 1942-S Wartime Lincoln Cent Struck on a Bronze Planchet NGC MS 62 Brown Unique Discovery Coin   This is a fascinating 1942-S Lincoln cent that was struck on a 2.5-gram bronze planchet with a composition of 95% copper, 4% zinc, and 1% tin. After examining this unique […]

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Unique Simpson Collection Gold Pattern Coins Come to Market

One-Of-A-Kind $10 1863 Judd-349 Worth $1,250,000 Highlights Legend Rare Coin Auctions Regency Auction 51 $20 1865 Judd-452 Available For Private Sale At $5,500,000 Through Legend Numismatics   Legend Numismatics and Legend Rare Coin Auctions (LRCA) are pleased to announce that two truly unique numismatic rarities with long and storied pedigrees–the $10 1863 J-349 eagle and […]

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Apparently Unique 1516 Gold Real From Cologne Offered in Stack’s Bowers NYINC Auction

By Jeremy Bostwick – Senior Numismatist & Cataloger, Stack’s Bowers …… In the late 15th century, the vast silver deposits in the Austrian realm of Tirol contributed to the need for a broader, thicker silver coin than had been produced in the past. This gave rise to the crown-sized issues that would become ubiquitous in […]

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Results Analysis of the Donald G. Partrick Collection of Connecticut Copper Coins

By Ron Guth ….. On November 1, 2020, Heritage Auctions sold the Connecticut Copper collection assembled by Donald G. Partrick. This was a highly anticipated event because many of Mr. Partrick’s coins had been off the market since the 1980s and earlier. Mr. Partrick was known as a strong buyer of top-quality and rare Colonial […]

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The Great du Pont Coin Robbery… and Recovery

By Mike Garofalo for PCGS ……   Thursday, October 5, 1967, was a really terrific day for this author. I was 14 years old, a freshman in high school, and my beloved Boston Red Sox had just played Game 2 of baseball’s 1967 World Series. The Sox pitching ace, Jim Lonborg, shut out the St. […]

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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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NGC Certifies Unique 1952 Great Britain Penny

In Great Britain, the year 1952 saw a change of monarch, the first home-use microwave oven and the Great Smog of London, but nothing so common as a penny issued by the Royal Mint. Only one Great Britain penny is believed to have been struck in 1952, and it was recently certified by Numismatic Guaranty […]

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Unique 1800 S-209 Obverse Brockage Cent Featured in Stack’s Bowers Baltimore Auction

By James McCartney – Senior Numismatist, Stack’s Bowers …… We are thrilled to present a rare mint error large cent among the many early American copper highlights in our March 2020 Official Auction of the Whitman Coin & Collectibles Spring Expo. This 1800 Sheldon-209 cent depicts an obverse brockage, leaving in an intaglio impression of […]

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Mike Byers Mint Error News – Unique & Unlisted 1869 Standard Silver Half Dollar

By Mike Byers for Mint Error News …… Patterns in the Standard Silver series, inscribed on each coin STANDARD SILVER, were produced in the dime, quarter dollar and half dollar denominations. The dies were engraved by William Barber with one common reverse die. They were struck in silver, copper, aluminum and brass. This discovery coin […]

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Mike Byers Mint Error News – Unique 1842 Argentina 8 Escudos Coin Die Trial in Silver

By Mike Byers for Mint Error News …… This is an incredible and unique 1842 Argentina 8 Escudos struck in silver. It is an obverse die trial with a uniface reverse. NGC authenticated and certified it AU-58. It is unlisted in Krause’s Standard Catalog of World Coins and is referenced to CJ-10.2. It is the […]

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5 Iconic Unique US Coins You Can’t Own

By Joshua McMorrow-Hernandez for PCGS …… As many numismatists know, several extremely rare United States coins are worth millions of dollars apiece and can ever only be owned by a tiny handful of collectors at any single time. These include famous trophy coins such as the 1913 Liberty nickel, the 1894-S Barber dime, and the […]

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Coin Profile – Austria 2004 Vienna Philharmonic 100,000 Euro Gold Coin

Description: In 2004, the Austrian Mint celebrated the 15th year of its successful Vienna Philharmonic gold bullion coin program by producing 15 1,000-ounce versions of the popular Euro gold coin. The coin–nicknamed “Big Phil”–was presented to the public in grand style by Vice-Governor of the Austrian Central Bank, Wolfgang Duchatczek. The coins were too big […]

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The Unique 1755-S Santa Fe 4 Escudos from the Eldorado Collection

1755-S Santa Fe 4 Escudos Discovery Coin, Ex. Eliasberg   Crossing the block next week as lot 11306 at our official auction of the New York International Numismatic Convention (NYINC) is a historic landmark among Colombian coins. It is the only known example of the first milled 4 Escudos of Colombia. Richly toned with orange […]

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Heritage Auctions – Seldom Seen Selections: Unique Noe-12 Pine Tree Shilling

Among the many treasures featured in our upcoming 2017 November 1 & 3 Eric P. Newman Collection Part IX US Coins Signature Auction is the unique Noe-12 1652 Pine Tree Shilling with large planchet and reversed N’s. This coin has been graded VF30 by NGC, but more importantly, it is the only example available in […]

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Spink: Commonwealth Silver Coinage and Anglo-Saxon Gold

The upcoming sale of Ancient, British and Foreign Coins and Commemorative Medals at Spink contains a very special collection of silver commonwealth coinage which is sure to excite the collecting world, it also has a very good collection of ancient coins and a stunning Thrymsa. One item from the Tisbury collection has famously been the […]

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NGC Grades Likely Unique French Gold Pattern Coin

Numismatic Guaranty Corporation® (NGC®) has certified a likely unique French gold pattern that was submitted for grading at the recent ANA World’s Fair of Money in Denver. Graded NGC PF 65+, this remarkable Gem 1848A Essai 5 Franc is the only known gold striking of a 5 Franc Pattern of the Monetary Concours coin design competition of […]

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Modern Coins at Stack’s Bowers ANA World’s Fair of Money Rarities Night Sale: Lots You Need to Know

By CoinWeek ….. The American Numismatic Association’s (ANA) World’s Fair of Money remains one of the largest coin conventions in the calendar year. Stack’s Bowers, an Official Auctioneer of the ANA World’s Fair of Money, will conduct a seven-session sale over the course of eight days with sale highlights featured in the Session Four “Rarities […]

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20th Century Rarities Claim Top Honors in Heritage $4.1 Million Hong Kong World Coin Auction

1914 Republic Yuan Shih-kai silver dollar brings $77,675; 1953 Peoples Republic of China 10 Yuan Pick 870 Note sold for $47,800 A 1914 Republic Yuan Shih-kai Silver “L. Giorgi” Pattern Specimen Dollar SP65 PCGS, took top lot honors at $77,675 USD in Heritage Auctions’ inaugural Asian Coins and Currency Auctions held June 21-23 in Hong […]

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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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Mint Error News: Unique Certified Gold Belgium Franc Obverse Die Trial

1904 Design Overstruck on 1903 Design By Mike Byers for Mint Error News …… This is a unique, spectacular and dramatic Belgium Franc struck in GOLD. Below are examples of the 1903 obverse (French text) and the 1904 obverse (Dutch text), both struck in silver: It is an obverse die trial to test the die […]

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Mint Error News: PCGS Certifies Unique Two-Headed Nickel

United States 2000-P Jefferson Nickel Struck with Two Obverse Dies, PCGS MS65 By Mike Byers for Mint Error News …… This is the only known U.S. regular-issue coin of ANY denomination that was struck with two obverse dies (two-headed). It stands alone as a major U.S. numismatic rarity and proves that a United States two-headed […]

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Heritage Auctions – Seldom Seen Selections: Only Known Proof B-4 1820 Capped Bust Quarter

Before the Mint began their program of commercial proof offerings in 1858, no records were kept of how many proof coins were made during any particular year. In the early days, before about 1840, proofs were struck whenever a government official, such as the Secretary of State, requested specimen coins for diplomatic presentations, or when […]

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Building a World Class Numismatic Gold Coin Collection: The Josiah K. Lilly Collection, Pt. 12

By Harvey Stack – Founder, Stack’s Bowers …… CoinWeek continues to post Harvey Stack’s wonderful series of blogs on not only the building of one of the all-time greatest coin collections but also how the relationship between Josiah K. Lilly and the Stack family grew over time. This week’s entry compiles parts 19 and 20, […]

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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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Fresh Extremely Fine 1943 Copper Cent in Goldberg Pre-Long Beach Auction

1943 Lincoln 1C PCGS EF45 A Weekly CoinWeek Column by Greg Reynolds ….. Coin Rarities & Related Topics: News and Analysis regarding scarce coins, markets, and coin collecting #370 Just prior to the winter Coin, Stamp & Collectible Expo in Long Beach, California, the Goldbergs will conduct an auction of a wide variety of coins, medals […]

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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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Künker Auctions: The Preussag Collection, Part 2

On 1 November 2016 the second part of the Preussag collection will be auctioned off by London Coin Galleries in cooperation with Künker in Osnabrück. The material comprises 772 lots of mining coins, estimated at 630,000 GBP altogether. On 1 November 2016 London Coin Galleries, in cooperation with Künker, will be selling the second part […]

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PCGS Bounty for Five Legendary Coins Totals $50,000

Professional Coin Grading Service (PCGS) is extending the $10,000 reward offered for the 1964-D Peace Dollar to four additional coins, bringing the bounty up to $50,000. In addition to the 1964-D $10,000 bounty, PCGS will add four separate $10,000 rewards for the 1873-S Seated Dollar, the 1894-S Barber Dime, the 1841-O $5 Half Eagle and […]

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Western Australia Premier Unveils Perth Mint Exclusive

The Premier of Western Australia, the Honourable Colin Barnett MLA, today unveiled the world’s first coin to feature a significant red diamond from Rio Tinto’s iconic Argyle Diamond Mine. A world exclusive from The Perth Mint, the Kimberley Treasure coin is the only coin in its class. Valued at NZ$1 million, the breathtaking collectable has […]

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Rare Coins: Likely Unique 1891-O Proof Dime, The Only Certified Proof Unlisted Variety

From the CSNS Heritage catalog as Lot 5574 Walter Breen called the early presentation pieces and pre-1858 dated proofs the caviar of proof coinage, and then compared them to the branch mint proofs that he called “dishes of peacock’s tongues.” Proof coins were struck at the branch mints for presentation purposes, to mark special occasions, […]

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Newly Discovered Variety, Unique Example of 1855 Wass, Molitor $20 Territorial Gold to be Sold

Heritage will be offering a newly discovered and unique Territorial Gold piece at the upcoming Central States Signature Sale April 23-7 in Chicago as Lot # 14006.  Below is the full description from the Heritage Catalog 1855 $20 Wass Molitor Twenty Dollar, Large Head AU53 NGC. Variety unlisted in Kagin, believed unique. An exciting new […]

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