Bullion coins are government-minted, legal tender coins made of precious metals, such as gold, palladium, platinum, rhodium, and silver. They are kept as a store of value or an investment rather than used in day-to-day commerce. How are they determine? How many are produced by each year? What are they? Which country minted them? What are the fineness? What are their mintages? This are the frequent ask question? Please see link. https://en.wikipedia.org/wiki/List_of_bullion_coins
