You can easily sell platinum in Atlanta by many methods like you can sell the platinum coins to the coin dealer or the coin shows will happen in some of the cities where the investors and the coin collectors visit the show so you can place the platinum coins in the shows. The other method to sell the platinum coins is through websites and forums where you can chat with the people and even bargain the rates of the platinum coins. The platinum brokers even have the website where you can register and place the details about the selling of the platinum jewelry or the platinum coin. But it is important to select the reliable and reputed company.  The rare coins are easy to sell and they have higher price, usually the older the platinum coin the higher the cost of the jewelry. There are many applications for the platinum metal as they are used in the engineering field. It is the most uncommon metal and so it is highly expensive that is why many people invest in this white metal. Before selling the coins make sure that they are collectible or non collectible as both type have different value.