The present volume which includes some of the most recent studies on ancient Iranian numismatics has been dedicated to the memory of David Sellwood (1925-2012). Sellwood spent more than fifty years of his life studying and publishing about the history and coinage of Iran. His legacy is exhibited in this volume through the contributions of individuals from different backgrounds and countries who have participated to make this book possible. He would have been pleased to see that not only his old friends remember him, but also that some young scholars, who were not even born when the first edition of his Introduction to the Coinage of Parthia was published in 1971, are now working in the areas of his interests.