Wilfried Pieper After completing his PhD degree in Medicine from the University of Cologne in the 1980s, Wilfried Pieper worked as a hospital doctor and later as general practitioner. Since his early Youth, he has development a special interest in the coinages of ancient India. As an independent research Scholar, he has been involved in research scholar, he has been involved in research and publications on ancient Indian numismatics. Since the 1980s, he has regularly published in numismatic journals, particularly ONS-NL/JONs and Numismatic Digest. His major Publications includes Ancient Indian Coins (1998 as a joint Publication with Prof.Osmund Bopearachchi) and Ancient Indian Coins Revisited(2013).