About Heritage Auctions - Coins: World and Ancient Coins

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Coins: World and Ancient Coins

Headshot photo of Cristiano Bierrenbach
Cristiano Bierrenbach
Executive Vice President of International Numismatics
1-800-USCOINS (872-6467)  x1661
Languages Spoken: Portuguese, Spanish
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Warren Tucker
Vice President, Heritage World Coin Auctions
1-800-USCOINS (872-6467)  x1287
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Warren Tucker has been a full-time coin dealer since 1964. In 1968, he joined Jack Boozer and Doug Weaver in business in Waco, Texas, where he first met Steve Ivy. Warren later moved back to Georgia, where he became a partner with John Hamrick at WorldWide Coin Investments of Atlanta. During the 1970s, Warren began more extensive travel throughout Europe and Asia to buy coins. In 1979, he first joined forces with Steve Ivy, opening an office in Atlanta. Associations with Richard Nelson and Ronald J. Gillio followed thereafter.

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Kenneth Yung
Director of Asian Operations
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Kenneth Yung joined Heritage Auctions as Director of Asian Operations after building a career in numismatics as one of the most active dealers in the Hong Kong and China markets. In addition to accepting consignments for upcoming Heritage auctions, he will be responsible for all Hong Kong office operations. Kenneth began to develop a strong interest in collecting older items as a child, which eventually led to collecting coins and banknotes during his high school years, and owning a retail business in Hong Kong during the 1990’s. He has been a full-time dealer since 2002 and PCGS, NGC & PMG authorized dealer since 2012. A committee member of the Hong Kong Numismatic Society and Vice Chairman of the Hong Kong Stamp and Coin Dealer Association, Kenneth is the organizer of the Hong Kong International Numismatic Fair (HKINF), which is held each June and December.

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Marc Emory
Director of European Operations
1-800-USCOINS (872-6467)  Page
Languages Spoken: Dutch, English, French, German, Italian, Russian, Spanish, Swedish
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Marc Emory was born in northern Virginia, where he grew up as the son of a Washington correspondent of a newspaper in Upstate New York. A child of the Washington political scene, he was visiting the White House at age 13, and Capitol Hill many times before that. Like so many children of Washington, he attended the Sidwell Friends School. He than was accepted for the Schoolyear Abroad program in Spain, then sponsored by the two Phillips Academies (Exeter, NH and Andover, MA). After the year in Barcelona, he went on to graduate from Andover (1970), and four years later graduated cum laude from the University of Pennsylvania (1974), with a degree in Spanish. He always had an interest in languages, and while at Penn got his introduction to German and Swedish, in addition to continuing his studies in Spanish and Russian from high school. In addition to those four languages plus Catalan, a byproduct of his year in Barcelona, he has since learned French, Italian and Dutch. 

Always interested in collectibles, he was impressed from early childhood by the Smithsonian collections of both coins and minerals, which were within walking distance of his father's office at the National Press Building at 14th and F streets in Washington, D.C. He maintains an extensive collection of minerals at his German home, near the Rheinland city of Dusseldorf, which he shares with his wife of 25 years. His wife, Elisabeth, is a German native, and they speak German at home. Their two bilingual daughters currently attend universities in the United States, after secondary school education in Germany. Marc also has a collection of U.S. coins and an assortment of guitars hand-crafted by legendary luthier Bozo Podunavac. A musician by hobby, he has made recordings and done solo concert tours in his spare time, a commodity which he finds in all too short supply of late.

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.

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Todd Imhof
Executive Vice President - Heritage Auction Galleries
1-800-USCOINS (872-6467)
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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. 

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Nicholas Mathioudakis
Managing Director
+44 (0)207 493 0498
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Nicholas Mathioudakis has been collecting coins since the age of thirteen. Having lived in Saudi Arabia, he would spend a lot of time roaming the souks in search of hidden treasures where he also bought his first ancient Greek coin. His drive and passion for numismatics led him to take up a full time position at Morton and Eden (formerly associated with Sotheby’s) where he catalogued ancient coins and paper money. Mathioudakis’ areas of expertise include ancient coins, paper money, particularly of the Middle East, European medieval, Islamic and Modern coins. 

Headshot photo of Huib Pelzer
Huib Pelzer
Associate Managing Director, Europe
1-800-USCOINS (872-6467)  E
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At age 12, Huib Pelzer eagerly traded his guitar for three Roman coins of Constantine the Great, marking the start of a lifelong fascination with numismatics and collecting. He earned his degree in social geography from the esteemed Utrecht University in 1992 before starting a travel agency immediately after graduation that specialize in organized tours of the Baltic States and most of Eastern Europe. In 1996, Huib partnered with Jacco Scheper to help lead MPO's expansion into the auction business. 

While specializing in world and ancient coins, fine art and collectibles, Huib's day-to-day responsibilities include managing Heritage Auctions Europe's Amsterdam office and client services and support. He also organizes the office's appraisal days and manages the press. Huib is fully conversant in English, German, Dutch/Flemish and French.

Headshot photo of Jacco Scheper
Jacco Scheper
Managing Director, Europe
1-800-USCOINS (872-6467)
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Jacco Scheper started collecting coins and stamps in 1977 at the age of 7. After graduating from the famous international Business University Nijenrode in 1991, Jacco held various management positions. In 1996 he and Huib Pelzer acquired coin show organizer MPO, and eventually transformed it into an auction and trading company. MPO held its first auction in 1999. Within a few years MPO became the leading auction house for coins, banknotes and stamps in the Netherlands, and expanded its auction activities to other collectibles from 2011 onwards. In 2015 MPO’s superb reputation for integrity and expertise caught the attention of the owners of Heritage Auctions, which acquired MPO and its entire staff and rebranded it as Heritage Auctions Europe. 

In 2006 Jacco was voted onto the board of the NVMH (Dutch association of Coin Dealers), and elected President of the board in 2009, serving a 6 year term ending in 2012. In 2015 he became President again. Jacco also serves as one of the experts of the NVMH Committee for Numismatic Certification. He also served as a member of the board of SBN (Foundation to Promote Numismatics) from 2006 until 2015, is one of the judges of Krause's COTY (Coin Of The Year – Award), and holds memberships in TMV (Association for Registered Appraisers), Hobéon – recognized – and KGMPK (Royal Society for Coins and Medals).

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

Headshot photo of Jan Schoten
Jan Schoten
Consignment Director
1-800-USCOINS (872-6467)
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A collector of coins and stamps starting in 1983, Jan and childhood friend Jacco Scheper visited numerous shows together starting in high school. After earning a journalism degree in 1992, he spent seven years in media before volunteering to help with Jacco's new venture at MPO once the company began auctioning in 1999. Jan officially joined the firm in 2001 as a specialist in Dutch medieval, provincial and colonial numismatics and now plays a vital role with the newly formed Heritage Auctions Europe. 

Jan's experience in auctioneering and consigning during his 16-year tenure with MPO has made him an expert on Dutch and European Currency. A member of the NVMH (Dutch Association of Coin Dealers) catalog, he is multilingual in English, Dutch, German and French.

Headshot photo of Idsard Septer
Idsard Septer
Consignment Director
1-800-USCOINS (872-6467)
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A 17-year veteran of the Dutch auction scene, Idsard began collecting stamps as a child before also moving onto coins. After graduating in 1998 with a degree in Geophysics and Geography from the Netherlands' prestigious Utrecht University, he joined MPO when the company held its inaugural auction in 1999, and has continued to be an integral member of the firm since. 

A native of Vlissingen, Netherlands, Idsard specializes in stamps, world numismatics, medals and decorative arts. He is multilingual in English, Dutch and German.

Headshot photo of Sam Spiegel
Sam Spiegel
Director, International Numismatics
1-800-USCOINS (872-6467)  x1524
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Joining Heritage in 2013 after graduating from the University of Chicago with degrees in Classics and History, Sam’s responsibilities include working with consignors and buyers, all stages of catalog production, as well as market research and data analysis. He previously worked for Classical Numismatic Group and Harlan J. Berk, ltd. 

Headshot photo of Max Tursi
Max Tursi
Managing Director
+44 (0)207 493 0498
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Max received an MA in Classics from Universitá degli Studi of Pavia, Italy.  A lifelong coin collector, he has worked for a number of prestigious firms including Christie’s Rome, Astarte S.A. in Lugano, Spink and Son and Classical Numismatic Group in London. Most recently he has been partnered with Mathioudakis at London Coin Galleries Ltd. since 2014. In the last 18 years Tursi has acquired extensive experience in both the retail and the auction world. Focusing mainly on ancient coins, his area of expertise extends to European medieval and modern coins.

Headshot photo of Roxana Uskali
Roxana Uskali
Director of Numismatics, Chicago
1-800-USCOINS (872-6467)  x1282
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Roxana Uskali, the Director of Numismatics for Heritage Auctions’ Chicago office, started collecting coins like many of you — as a youngster who frequented a local coin and stamp shop in her neighborhood. She went on to graduate cum laude from Loyola University Chicago, receiving degrees in world history, theology, and piano performance before pairing her diverse academic background and her love of traveling into a career in professional numismatics. Roxana spent nine years working as the principal world coin numismatist for the prestigious Chicago firm Harlan J. Berk, Ltd., and more recently her own company, KRCoins. Over the last several years, she has helped catalog Heritage’s world coin auctions while also frequently attending major coin shows around the U.S. and abroad. In addition to being a member of the ANA, the IBNS, and the CSNS, Roxana also produces coin-related videos (“Coincasts: www.youtube.com/user/KRCoins”) for the public.

Headshot photo of Danny van Doorn
Danny van Doorn
Manager of Operations
1-800-USCOINS (872-6467)
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