David L. Ganz, who has written about coins and coin collecting for the last 40 years, shows investors in this guide how to begin, build and maintain a properly diversified collection. Moreover, he presents in this The Essential Guide to Investing in Precious Metals the ways to add precious metals to a personal portfolio. Gold and silver have been king and queen of metals for centuries. Today, they are joined by platinum and palladium in the precious metals arena. They are traded in the form of bars, rounds and ingots, tangible assets you can see and touch.