The product is a hardcover guide book titled "A Guide Book of United States Coins - 40th Edition - 1987" by R.S. Yeoman. It is an illustrated book published by Western Publishing Company in 1987. The book is a reference guide focused on coins, currency, and medals, with a special emphasis on American coins. The 40th edition features detailed information and illustrations on various types of US coins, making it a valuable resource for coin collectors and enthusiasts.