Coin and paper money collectors and dealers have the opportunity to learn from numismatic experts.

Numismatic Guaranty Corporation™ (NGC®), Numismatic Conservation Services™ (NCS®) and Paper Money Guaranty™ (PMG®) are sponsoring an educational symposium at the Hong Kong International Numismatic Fair (HKINF). The symposium will be held Saturday, June 29, at the Mira Hotel, 3rd Floor.



  • Stane Straus is an expert on polymer banknotes and is managing director of PBN Ltd.He travels extensively overseas and maintains relationships with central banks and banknote printers around the world. He has advised central banks on banknote printing and on conversion to polymer notes.
  • King L Chan is a modern Chinese coins expert who has written several books and is co-author of “Gold & Silver Coins of China: Standard Catalogue, 1979-2017.” He is a renowned Chinese numismatic scholar and a senior NGC consultant.
  • David J. Camire specializes in modern Chinese coins and is considered an authority on mint errors. Before joining NGC in 1999, David was a numismatist with one of the largest coin companies. He is the co-author of “100 Greatest U.S. Error Coins.”
  • Adam Howerton is one of the most senior members of PMG’s paper money grading team. Before joining PMG in 2011, Adam was a graduate and research assistant at the University of South Florida in Tampa, where he completed a master’s degree in US cultural history.

In addition to sponsoring the symposium, NGC, NCS and PMG are attending the HKINF and will accept submissions and answer questions about the companies’ services at booth D12-D15 for the duration of the show.