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Here is this week's test your knowledge! Let's see what you know! Find the answer on our Facebook page on Sunday or check next week's email newsletter.  Good luck!​

Did you know that Stack’s Bowers Galleries sold two rare coins exceeding $1 at auction in 2017, the only seven-figure U.S. coins to cross the auction block that year?

By Q. David Bowers, Co-Founder

​Double eagles have always been one of my favorite series. The first one I ever owned was an 1855-S when I was a teenager in the early 1950s. Graded perhaps EF-40, it was fascinating to hold. Where had it been in the past hundred years? How did it get from San Francisco to the East Coast? At the time I was learning as much as possibly by reading books, auction catalogs, and back issues of the American Journal of Numismatics, The Numismatist, and The Numismatic Scrapbook Magazine. Then, as now, the yearly Guide Book of United States Coins gave annual updates on prices.

Lot 10043 from our upcoming official auction of the New York Internationational Numismatic Convention offers an important highlight from the Eldorado Collection: Banco de la República Billete Provisional - Overprinted on Casa de Moneda de Medellín. 2 ½ Pesos. ND (1923). P-351 is an extremely rare Provisional overprint note with an illustrious pedigree.

The Mortimer Hammel 1826-JF 4 Escudos is among the many highlights from our upcoming sale of the Eldorado Collection of Columbian and Ecuadorian Coins that crosses the block as part of our official auction of the New York International Numismatic Convention.

By James McCartney, Numismatist & Cataloger

The A.J. Vanderbilt Collection, featured in our Official Auction of the 2018 Whitman Coin & Collectibles Spring Expo, represents a lifetime of numismatic pursuit that began at Stack's in 1936. This cabinet showcases a vast array of rarities including the R.L. Miles 1874-CC Liberty Seated dime (tied for finest known) and a Mint State 1795 Heraldic Eagle half eagle.

Stack’s Bowers Galleries invites you to visit New York City and enjoy a day on us. Come to our New York Store now through January 31, 2018 and sell us $500 or more worth of coins, currency or bullion and we will pay for your train ticket.*

By Kyle Ponterio, Numismatist & Cataloger

For collectors of World and Ancient coins and medals the start of the 2018 New Year will be exciting as the 46th Annual New York International Numismatic Convention (NYINC) kicks off the year.  The convention is open to the public January 12-14 from 10 am to 7 pm with early bird entry on Thursday January 11 starting at 12 noon.  Countless treasures from around the globe will be on display from 115 dealers ready to assist with your collecting needs.