WHY CHOOSE HERITAGE AUCTIONS?

David Mayfield is a Vice President at Heritage Auctions. David started collecting coins at the age of nine and has been trading at coin shows since he was ten years old. David became a full time coin dealer in the early 80's, and has been a regular on the national and international coin show circuit ever since. David came to work at Heritage Auctions in 1992, and since has had the pleasure of assisting thousands of collectors in building their collections and ultimately in helping them bring their collectible legacy to market. David oversees Heritage Auction's numismatic consignment division, and works with collectors and Consignment Directors across all of Heritage Auction's collectible categories.

Dustin Johnston joined the Heritage team in 1998 and has been active in nearly every aspect of the business. He was born and raised in Tucson, where he also attended the University of Arizona. Prior to joining Heritage, he won a number of literary and exhibiting awards from the ANA. Dustin also served as an Exhibit Judge and Numismatic Theater Speaker for the ANA. He oversees the management of the Currency division including consignment acquisitions, purchasing, cataloging, marketing, and inventory management. He is a life member of the American Numismatic Association, Numismatic Literary Guild, and International Bank Note Society, and member of several other numismatic organizations including the Professional Numismatists Guild, Professional Currency Dealers Association, and Society of Paper Money Collectors. Currently, he serves as Vice President for the PCDA, and as a board member for the PNG. His involvement in the industry and oversight of a significant market share in auctions landed him on Coin World’s list of Top 100 Most Influential People in Numismatics. Away from work, he enjoys married life, his two young kids, and WWI research related to the 364th Infantry.

Sarah Miller is Senior Vice President and Partner at Heritage’s New York Office and brings a lifelong passion for coins. A student of numismatics since age 11, she first fell in love with coins and their history while attending her first coin show. This led to a job in rare coins throughout high school and college, where she graduated Summa Cum Laude from North Central College in Naperville, Ill., with a degree in Finance and Economics.

Sarah assists Heritage clients with buying and selling their rare coin and currency collections on a daily basis. She has twice appeared as a numismatic expert on CNN and is a current member of the Professional Numismatists Guild, American Numismatic Association, the American Numismatic Society, and the New York Numismatic Club. She also is a licensed Auctioneer in Texas, Florida, and New York City.

Jacco is conversant in English, French, Dutch/Flemish and German.

Zach received a BBA in Finance from the University of Wisconsin-Whitewater in 1992. Having worked primarily in the Information Systems field as a network admin or project manager for various firms since graduation, he left the industry to open his own coin dealer business full-time in 2003. Self-taught and specializing in ancient coins, Zach continued to run the business while participating extensively in online forums, developing a reputation for meticulous cataloging and research, leading to a position as co-writer for one of the columns in the Celator Magazine, where he received an award in 2005 for "Best Column" from the Numismatic Literary Guild for "The Internet Connection."

In 2013, he accepted the position of customer service manager for an online website for coin dealers and remained for 4-1/2 years until joining the world and ancient coin department at Heritage in June 2017. Bringing his enthusiasm for cataloging, Zach greatly enjoyed preparing the popular, and growing, weekly internet sessions, as well as the signature auctions, to assist collectors in better understanding the complex and beautiful arena of ancient numismatics. Since joining the team, the world and ancient coins department has seen explosive growth in sales and has been awarded NLG awards each year for Best Auction Catalog of World Coins: 2018 (August ANA Platinum Night); 2019 (Morris Collection, August Central States); 2020 (NYINC Platinum Night); 2021 (Paramount Collection, August Central States).

Having been promoted to Director of Ancient Coins in 2021, his primary duties now involve negotiating consignments, but still is the primary cataloger for the signature ancient auctions (Platinum Session, Signature Session, and Showcase auctions).

An award-winning professional numismatist, Mark Borckardt has served the hobby full-time since 1980, and is currently a senior numismatist and cataloger with Heritage Auctions, a position he has held since June 2004. His interest in numismatics dates to the mid-1960s, and his experience in the business began part-time attending coin shows to buy and sell material about 1970.   

Borckardt began cataloging rare coins for auctions in 1989, and since that time he has handled 80 of the 100 top United States coins according to the itemization contained in 100 Greatest U.S. Coins by Jeff Garrett and Ron Guth. He is a life member of the American Numismatic Association, Early American Coppers, and the Numismatic Literary Guild, and a member of several other numismatic organizations including the American Numismatic Society, the Chicago Coin Club, the Central States Numismatic Society, the Civil War Token Society, and Florida United Numismatists. Borckardt was nominated and elected to membership in the Rittenhouse Society in 1994.   

With Heritage Auctions, Borckardt has cataloged 28 of the firm’s million-dollar coins. His numismatic experience includes important discoveries such as a new early half dollar variety, 1806 O-130 and rediscovery of the missing George O. Walton specimen of the 1913 Liberty nickel. Borckardt is co-author of Million Dollar Nickels, telling the story of that important numismatic event.  He is the editor of Walter Breen’s Encyclopedia of Early United States Cent, 1793-1814, earning the EAC Literary Award in 2001 and the NLG Book of the Year award that same year. He has also contributed substantially to many other numismatic reference works. In addition, Borckardt has penned many articles for The Numismatist, Penny-Wise, and other numismatic publications.   

Borckardt has contributed substantially to countless numismatic auction catalogs, and served as the sole cataloger for several important catalogs. He has experience with many of the most important collections sold at auction including the Eliasberg Collection, the Harry Bass Collection, multiple collections of Dr. Steven Duckor, the Eugene H. Gardner Collection, the Eric P. Newman Collection, the Donald G. Partrick Collection, and others. The Newman and Partrick Collections included significant offerings of American colonial-era coins.

Awards include the Early American Coppers’ Herbert Silberman Award in 2021, the ANA Numismatist of the Year in 2020, an ANA Presidential Award in 2018, the Numismatic Literary Guild’s Clemy Award in 2016, and several other awards from the Numismatic Literary Guild. Borckardt has also delivered several talks and presentations at various numismatic meetings, and has served multiple times as an instructor at the ANA Summer Seminars.   

After graduating from the University of Pennsylvania, Marc joined one of the two firms that later merged in late 1982 to form Heritage. He is has been with the company without interruption since joining in August, 1975. He founded and oversees the operations of the Heritage Overseas offices, which are now in France (since 1979), Germany (since 1979), Switzerland (since 1984), and the Netherlands (since 1990). The Heritage offices in France, Switzerland and the Netherlands are all run by natives of those countries, coordinating in their own languages through Marc at the German office with the Heritage world headquarters in Dallas. The European offices, under Marc's supervision, in turn offer Heritage services to collectors, consignors and estate executors in their own countries and in their own languages, as well as to banks and Central Banks around Europe and the world.

Mark has been an active and important presence in the rare coin industry on a full-time basis, since 1979. He has worked for Steve Ivy Rare Coins, Heritage Rare Coin Galleries (an early incarnation of Heritage Auctions), David Hall, Mark Salzberg, as a grader at NGC, Pinnacle Rarities, and as the owner of his own U.S. rare coin business - Mark Feld Rare Coins.

An avid coin collector from an early age, Mark has been quoted as saying “Numismatics runs in my blood, literally. Numismatic pioneer B. Max Mehl was my grandmother's uncle, and I have always been very proud and respectful of that special connection.” And Mark has backed up those words in his dealings with collectors, as well as dealers, over a period spanning more than forty years. He has been widely recognized as an outstanding source of numismatic information and collecting advice to countless collectors - a true collector’s advocate.

Al Pinkall joined Heritage as Director of the Numismatic Sales Department in 2011. A collector since childhood, Pinkall has been a full-time professional coin dealer for 25 years with extensive experience in high-grade and proof classic U.S. coins. In 2010, he acquired the rare coin and precious metal assets of another New England dealership, Ed Lee Certified Coins.  

Pinkall’s business success has been built upon the foundation of providing the most candid, expert, and ethical advice to collector-investors who were acquiring expensive numismatic rarities. His stellar reputation in the high-end numismatic community, providing such high levels of service and expertise, has made him a natural fit at Heritage.

Thomas started his numismatic journey as a curious 8-year-old kid who found a coin in Rio de Janeiro’s ocean. By the age of 12, he started dealing coins and currency in Brazil. With an interest in Latin, ancient and medieval numismatics, he specialized in such coins and made a career in numismatics, with a brief hiatus to get his Law degree. After seeing that law practice wasn’t for him, Thomas decided to return to the coin business. With a close friend, he formally opened Aletho Numismatics in 2020, a successful venture that cemented Thomas as a key lecturer and active participant in the Brazilian Numismatic Society. Thomas brought his expertise to the World and Ancient Coins team at Heritage Auctions in 2021, where he currently works with World coins from accross the globe. Thomas is conversant in English, Spanish and Portuguese.

Pia's background lies in engineering. After residing in Australia for several years, she relocated to Dallas and embarked on a second career at Heritage, where she pursued her long-standing passion for coin collecting. As an avid Anglophile, she has a particular affinity for coins from Great Britain and the British Empire. Her expertise also extends to physical cryptocurrency, contributing to the cataloging of Heritage’s physical cryptocurrency auctions. In her current role, Pia works closely with clients throughout the consignment process, assisting them with their rare coins and collections.