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.
Mark Ingold has been Director of Numismatics in the Rare Coin Department of Heritage Auctions since May of 2008. Mark has had passion for coins his entire life with the help of his father who is a lifelong coin collector. Mark specializes in 18th century to date US coins and currency as well as 17th century to date World coins. Mark’s vast knowledge of Numismatic has made him an upcoming star in the world of Numismatics.
Mark's main duties including selling coins from Heritage's vast rare coin inventory and traveling to all major coins shows.
He has written numerous numismatic articles that include “United State Gold Coins” and “The History of the Silver dollar from 1794 to present”. He is a member of the American Numismatic Association and Madison Coin Club and also holds a merit badge in Coin Collecting from the Boy Scouts of America. Mark has a Bachelor of Science degree in Marketing from Edgewood College in Madison, WI.
George Chua is a Consignment Operations specialist for U.S. Coins and is a collector of rare stamps. He started collecting during overseas trips as a child to the Far East and his interest developed into a lifelong passion and pursuit of philatelic knowledge. He has been a member of the American Philatelic Society since 1988. George’s experience with stamps allows him to work closely with collectors to assist in the evaluation and management their collections.
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, at NGC as a grader, Pinnacle Rarities and as owner of his own numismatic business, Mark Feld Rare Coins.
An avid coin collector from an early age, Mark has been quoted as saying “Numismatics must run 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 thirty years. He hasy been widely recognized as an outstanding source of numismatic information and collecting advice to countless collectors - a true collector’s advocate.
In 1991 Todd co-founded Pinnacle Rarities, a firm specialized in servicing the most advanced and preeminent collectors in numismatics. At only 25, he was accepted into the Professional Numismatists Guild, and currently serves on its Consumer Protection Committee and its Legislation/Taxation Issues Committee. In 1992, he was invited to join the Board of Directors for the Industry Council for Tangible Assets, later serving as its Chairman (2002-2005). As a partner at Heritage, he assists Consignment Directors across multiple categories and oversees services for the Legacy client group. Todd also handles most of our more complex consignments and advises many of the firm’s largest and most active clients.
Sarah Miller is Director of Numismatics at Heritage’s New York office and brings a lifelong passion for U.S. Coins. A student of numismatics since age 11, she first fell in love with U.S. coins and the history behind them 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. She amassed an impressive list of accomplishments during her studies and is a past member of the Financial Management Association National Honor Society, the Omicron Delta Epsilon International Economics Honor Society and was a participant in the Honors Council of the Illinois Region. Sarah assists Heritage clients with their rare coin collections on a daily basis in addition to being a regular contributor to the Heritage Blog. She is also a current member of the American Numismatic Association. In her spare time, she enjoys travel, taking ballet classes, knitting, and baking.
Al Pinkall, has joined Heritage as Director, Numismatic Sales Department.
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.
"We have long understood that collector-investors who are acquiring expensive numismatic rarities appreciate the most candid, expert and ethical advice. Al Pinkall has earned a stellar reputation in the high-end numismatic community for providing that kind of service and expertise. We couldn't be happier that he chose to join us," said Todd Imhof, Executive Vice President of Heritage.
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Dallas, Texas 75219-3941
Fax: (214) 409-1425