American Silver Eagles : A Guide to the U.S. Bullion Coin Program is an amazing book by John Mercanti, the 12th chief engraver of the United States Mint and the designer of the reverse of the Silver Eagle. It contains the history of the United States Bullion Coin Program and the stockpiling of silver by the United States. It then dives into the coining process and John Mercantiâ€™s experiences in the mint. This wonderful book then dives into values, commentary, and certified population of silver eagles from 1986 to 2015. This book then gives photos of many of John Mercantiâ€™s beautiful numismatic contributions such as state quarter reverses. The last section of this book talks about spotting of silver eagles. The cause of spotting is unknown, but PCGS theorizes is that it is because of the .999 silver composition.
This is a very useful book that any numismatist will find to be worth its weight in silver and written by none other than the designer. This book can be borrowed from the ANA library.