Mr. Van Allen has authored more than 20 books on Morgan and Peace silver dollarvarieties. With numerous numismatic awards, he is considered by most as the father of Morgan & Peace silver dollars. This is the definitive reference for attributing Micro o mint mark VAM Morgan silver dollar varieties. Leroy C. Van Allen is considered the father of Morgan silver dollars with his opus, ""The Comprehensive Catalog and Encyclopedia of Morgan & Peace Silver Dollars. It is edited by noted silver dollar expert, Michael S. Fey, Ph.D. This book has extensive descriptions and photos of the known Micro o varieties that were struck by the U.S. mint and by private mints. Scarce varieties as well as rare die varieties worth substantial premiums are listed in this book and easy to attribute. It's quite possible that one of your silver dollars currently worth about $50 in 2025 could be a rare die variety worth thousands of dollars. You would not know unless you compared your silver dollar to the pictures given in this book. A must have reference for collectors, investors and dealers in silver dollars. Morgan silver dollars are perhaps the most popular and collected type coin in numismatics today. Dr. Fey was elected to the Board of Governors of the 26,000 member American Numismatic Association (ANA) from 2005-2007. He currently services on the ANA Advisory Board. He was the Senior Instructor for the ANA Summer Seminar at the Colorado College in Colorado Springs, CO for more than 20 years, served on the ANA Consumer Protection Committee, and loaned rare silver dollars for display in the ANA Museum. He has authored several reference books on Morgan dollars and published a quarterly newsletter for 10 years (A Decade of Top 100 Insights), but is perhaps best known as a co-author with his mentor silver dollar expert, Jeff Oxman, for ""The Top 100 Morgan Dollar Varieties: The VAM Keys"". Dr. Fey has received many numismatic awards, has been a speaker at major numismatic national conventions. He has discovered more than 50 new Morgan dollar varieties as well as dozens of new varieties in other U.S. and foreign coin series.