Amazon.com description: Product Description: "Junk silver" is a term to describe U.S. dimes, quarters, and half dollars that were minted in 1964 and earlier, as well as various other U.S. coins, because they are composed of between 35% and 90% silver, while newer and current coins are composed of the much cheaper base metals copper and nickel. This comprehensive book covers everything you need to know about U.S. junk silver coins, from the history of how and why the Government made the switch away from silver, to the many benefits of holding junk silver today. In addition, you'll learn crucial information including: how wear and condition affect the silver content of coins, how to detect counterfeits, how to buy and sell junk silver coins wisely, and much, much more.