A worldwide network of experts continues to uncover collector coin issues never before published. For the collector or simply the researcher attempting to identify world coins, this is the perfect single source. Bi-metallic and tri-metallic coins. Completely analyzed and updated pricing. Information compiled by over 200 experts worldwide. About the Author George Cuhaj is an experienced and accomplished numismatist and researcher. An avid collector with a passion for this hobby, he is closely aligned with leaders in the field. A past president of the American Medalic Sculpture Association, he is a frequent instructor at the American Numismatic Association's Summer Seminars. George is also editor for The Standard Catalog of World Paper Money series.Thomas Michael holds a Bachelor of Arts degree in history and a Master of Arts degree in economics. He has more than 20 years of experience researching and reporting on world coin prices and market trends.