Skip to main content
Go to accessibility notice

About Heritage Auctions - Coins: World and Ancient Coins

Browse Department Contacts

Coins: World and Ancient Coins

Headshot photo of Cristiano Bierrenbach
Cristiano Bierrenbach
Executive Vice President of International Numismatics
1-800-USCOINS (872-6467)  x1661
Specialties: Ancient Coins, World Coins
Languages Spoken: Portuguese, Spanish
Request Free Appraisal

Cristiano Bierrenbach started trading coins in his native Rio de Janeiro at the age of seven before founding his own successful numismatic business. In 1996, he established one of the first numismatic shops on eBay and later became the youngest Technical Director of the Brazilian Numismatic Society at the age of 30. Cristiano joined Heritage and moved to the United States in 2007. Under his leadership, Heritage World and Ancient Coins auction sales grew steadily from $12.8 million in that year to $41.5 million in 2011, the year he became a partner. Cristiano developed the market for Heritage online-only automated auction venues, which today feature more than sixty events per year. In World Coins alone, these auctions exceed $12 million annually. Since 2015, Cristiano has been at the forefront of Heritage’s international expansion into Europe and Asia, and will continue to expand the company’s international footprint in the future.

Headshot photo of Roxana Uskali
Roxana Uskali
Director of Numismatics, Chicago
1-800-USCOINS (872-6467)  x1282
Specialties: Ancient Coins, US Coins, US Currency, World Coins
View Video Biography
Request Free Appraisal

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 called Coincasts.

Headshot photo of Warren Tucker
Warren Tucker
Vice President, Heritage World Coin Auctions
1-800-USCOINS (872-6467)  x1287
Specialties: Ancient Coins, World Coins
Request Free Appraisal

Headshot photo of Jacco Scheper
Jacco Scheper
Managing Director, Europe
1-800-USCOINS (872-6467)
Specialties: European Comics & Comic Art, Stamps, US Coins, US Currency, World Coins, World Currency
Languages Spoken: Dutch
Request Free Appraisal

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 Kenneth Yung
Kenneth Yung
Director of Asian Operations
1-800-USCOINS (872-6467)
Specialties: Ancient Coins, World Coins, World Currency
Languages Spoken: Cantonese, Mandarin, Swatow
Request Free Appraisal

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.

Headshot photo of Jan Schoten
Jan Schoten
Consignment Director
1-800-USCOINS (872-6467)
Specialties: Ancient Coins, World Coins, World Currency
Request Free Appraisal

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 Sam Spiegel
Sam Spiegel
Director, International Numismatics
1-800-USCOINS (872-6467)  x1524
Specialties: Ancient Coins, World Coins
Request Free Appraisal

Sam joined Heritage’s World & Ancient Coin department in 2013 after graduating from the University of Chicago with degrees in Classics and History.  Sam’s responsibilities include market research and data analysis, catalog production and working with his category’s top bidders and consignors. He also works closely with Heritage’s foreign offices and often travels overseas to represent the company at trade shows and expand Heritage’s international presence.  Sam spearheaded many of our latest and most innovative technological features in the World and Ancient Coin Department, providing bidders with helpful tools such as relevant comparable auction results and third-party grading census data to the online lot pages. 

Headshot photo of Zach Beasley
Zach Beasley
Director of Ancient Coins
1-800-USCOINS (872-6467)  x1741
Specialties: Ancient Coins, World Coins
Request Free Appraisal

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 on-line 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. There 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 on-line website for coin dealers and remained for 4-1/2 years until joining the world and ancient coin department at Heritage. Bringing his enthusiasm for cataloging, Zach greatly enjoys preparing the popular, and growing, weekly internet sessions, as well as the signature auctions, to assist collectors better understand the complex and beautiful arena of ancient numismatics.

Headshot photo of Marc Emory
Marc Emory
Director of European Operations
1-800-USCOINS (872-6467)
Specialties: Ancient Coins, US Coins, World Coins
Languages Spoken: Catalan, Dutch, English, French, German, Italian, Russian, Spanish, Swedish
Request Free Appraisal

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.

Headshot photo of Todd Imhof
Todd Imhof
Executive Vice President - Heritage Auction Galleries
1-800-USCOINS (872-6467)
Specialties: US Coins
Request Free Appraisal

In 1991, Todd co-founded Pinnacle Rarities, a firm specializing in servicing the most advanced and preeminent collectors in numismatics.  At only 25, he was accepted into the Professional Numismatists Guild and served 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).  Todd joined Heritage in 2006 and became a partner in 2009.  He assists Consignment Directors across multiple categories and oversees services for our Legacy Client Group.  Todd handles many of our largest and more complex consignments and private transactions and continues to advise many of our firm's most prominent clients.

Headshot photo of Cale Meier
Cale Meier
1-800-USCOINS (872-6467)  x1761
Specialties: Ancient Coins, World Coins
Request Free Appraisal

A coin collector and enthusiast from an early age, Cale received his BA in Anthropology, History, and German from the University of South Dakota in 2017. As an undergrad, Cale further developed his knowledge and interest in medieval European and Islamic coins and history, and began to apply the research methods he was learning at college to his personal collection. He also became deeply interested in studying the social functions of coins throughout history, a topic he continues to explore in his free time. Cale joined the Heritage Team full-time in January 2018 as a member of the World and Ancient Coins Department after interning during the end of 2017, and currently enjoys bringing his expertise and curiosity to the department's weekly internet and signature auctions. He is also working to refine his knowledge of Islamic coinage, an area of particular personal interest, to lead that division of the World and Ancient Coins department. His personal collecting interests include principally medieval hammered coinage from Europe and the Islamic world, though his collecting preferences remain quite varied and he is always interested to learn about new areas of coinage.

Headshot photo of Huib Pelzer
Huib Pelzer
Associate Managing Director, Europe
1-800-USCOINS (872-6467)
Specialties: Ancient Coins, World Coins
Languages Spoken: Dutch, French
Request Free Appraisal

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 Idsard Septer
Idsard Septer
Consignment Director
1-800-USCOINS (872-6467)
Specialties: Ancient Coins, World Coins
Languages Spoken: Dutch
Request Free Appraisal

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 Christian Winge
Christian Winge
Senior Numismatist
1-800-USCOINS (872-6467)  x1734
Specialties: Ancient Coins, World Coins
Request Free Appraisal

Christian Winge has had a passion for collecting and studying coins since a very young age growing up in Denmark, his home country. In 1997 Christian moved to the United States and eventually earned a Bachelor of Science degree from Trinity University, where he graduated with dual major in Finance and Economics. While subsequently working in consulting for EMC (now Dell-EMC), and later teaching advanced Economics, he continued to study and trade coins, with a particular focus on 19th century European issues. This continued interest eventually led Christian to the World and Ancient Coins department at Heritage, where he plays an important role in client relations and in building and cataloging major auctions.

Heritage membership

Join Now - It's Free

  1. Past Auction Values (prices, photos, full descriptions, etc.)
  2. Bid online
  3. Free Collector newsletter
  4. Want List with instant e-mail notifications
  5. Reduced auction commissions when you resell your
Consign now
  • Cash Advances
  • More Bidders
  • Trusted Experts
  • Over 200,000 Satisfied Consignors Since 1976
Only 4 days left to consign to the 2021 October 23 Sports Showcase Auction !

Learn about consigning with us

Heritage auctions is more than just an auction business. They are in the 'preserving history' business as well.
Alicia Kramer, Daughter of Jerry Kramer, five-time NFL World Champion,
Garden City, ID
View More Testimonials