The product is a hardcover book titled "Yankee Artillerymen" by John W. Rowell, focused on the Civil War period. It is an original work, not a reproduction, and falls under the theme of militaria, making it a valuable collectible for those interested in Civil War history. This book is a unique and authentic piece of literature that offers insights into the artillery units of the Union Army during the Civil War, making it a must-have for collectors and history enthusiasts.