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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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Cristiano Bierrenbach received a degree in management from Bucknell University in Pennsylvania in 1996. In 1997, Cristiano founded Bier Numismatica in Sao Paulo, Brazil and within a few years had become one of the largest numismatic dealers in Latin America.

In early 2008, Cristiano was hired as a Director of World Coins and in 2011, he become an EVP and partner of Heritage Auctions. During his tenure in world coins, Cristiano was instrumental in putting together some of Heritage's most memrable world coin auctions including Canadiana, Jacobs, Shoshana, RLM, Isaac Rudman and many others.

Currently, in addition to overseeing the operations and growth in world and ancient numismatics, Cristiano overseas our operations in Europe (Amsterdam) and Hong Kong. He is a life member of the ANA and FUN, the Professional Numismatists Guild (PNG) and several other numismatic clubs and organizations around the world.

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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
1-800-USCOINS (872-6467)
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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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David Michaels
Director, Ancient Coins
1-800-USCOINS (872-6467)  x1606
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David S. Michaels has been active in the field of classical numismatics for more than 24 years.  A specialist in Roman Imperial coinage, he has an extensive background in Greek, Byzantine, Dark Age, and Medieval coins as well. He is also well known as an author and lecturer. Michaels was born in Los Angeles, California in 1957. An early viewing of the movie “Cleopatra” when he was seven years old kindled a lifelong fascination with the ancient world.  While touring Italy in the mid 1980s, he purchased a battered Roman bronze coin, launching a new hobby and career path.  An interview with the renowned numismatist and author David R. Sear in 1988 convinced him that ancient coins could be more than a sideline. Two years later, he made numismatics his full time vocation. Michaels’ profile in the world of ancient coins rose steadily. In 1998, he became sales director of Classical Numismatic Group. Two years later, he joined Freeman & Sear, where he remained until 2010. Michaels has published several articles on aspects of ancient coinage and has given talks on the subject across the country.

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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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Matt Orsini
Consignment Director
1-800-USCOINS (872-6467)  x1523
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Matt has been a collector for essentially his entire life, from rocks and sports cards as an adolescent to coins which would blossom into a career during his teenage years.  Always having “business” as a focus as well, Matt quickly learned that many areas of introductory collectibles didn’t hold their value well and that if he was going to put his money into something, his hope was to get most or more of it out when the time to sell came.  This revelation coincided with the early days of Ebay, and soon, Matt found that he could make a little extra money in the hobby. 

Matt went to Trinity University in San Antonio for college and during the summer of 2003, decided to contact Heritage to see if employment opportunities existed – they did, and he wound end up working with the U.S. cataloging staff until graduation.  In 2005, Matt graduated with a BS in Finance and Marketing and immediately joined Heritage as a Consignment Director, a position he held for two years.

After two years with Heritage, Matt decided it was time to explore other industries and see what his degree could offer him.  For one year, Matt worked at New York Life Insurance Company in their Variable Products division.  Towards the end of that year, Matt was again lured back into the auction industry.  He joined Spink Smythe, a U.S.-based division of the London firm, as Vice President of Auctions where he coordinated auction sales for nearly 5 years.  It is during this period that Matt refined and broadened his expertise into the field of World numismatics.

Matt chose to re-join Heritage in their World Coin department as a Consignment Director in February of 2013. Playing off his prior experiences, Matt’s roles currently include cataloging for auctions, preparing marketing materials, and of course, using his broad base of numismatic knowledge to help people sell at auction.

While Matt does maintain and occasionally add to his coin collection, he currently finds himself pursuing numismatic medals more than anything else.  His collection of George Washington medals has been a long-time passion, and within his 1800-1830s focus, is fairly well-accomplished.  Additionally, Matt collects medals of Mexico made during the reigns of Carlos III (1759-1788) and Carlos IV (1788-1808).

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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 Michael Peplinski
Michael Peplinski
1-800-USCOINS (872-6467)  x1959
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Michael Peplinski has been involved with coins for more than 25 years.  He graduated from the University of Akron with a degree in classical guitar performance and his background as both a classical musician and ongoing career as a USAF officer brings an extraordinary diversity of experience to the Heritage team.  His specialty is Medieval coinage but his background includes ancient and modern coins from all over the world.  In addition to the running of the Weekly World and Ancient Coin Auction, Michael also catalogs coins for the major sales and assists clients with consignments.  He is a member of the ANA and the ANS.

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 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:”) for the public.

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