BULLION COINS FOR BEGINNERS. An Introduction To Bullion Coins and World Mints. The purpose of BULLION COINS FOR BEGINNERS is to introduce beginning coin collectors to Bullion Coins and World Mints. Bullion refers to both coins and bars, but the focus of this book is on coins. Most bullion is purchased for investment purposes; however, in this book you will learn that there are many beautiful designs from many countries that make them fun to collect as well. While some Mints produce many special-issue and themed bullion coins, the coins included in this book are limited to long-running consistent designs that are not significantly altered each year; and are widely-recognized as being associated with that particular country.