Albert Einsten, Articles, Federal Mint Swissmint, General News, News, smallest gold coin in the world, sold out Smallest Gold Coin in the World Sold Out January 25, 2020 Hannah Wiedmeyer Leave a comment On Jan. 23, the Federal Mint Swissmint released a machine-minted gold coin with a diameter of 2.69mm weighing only 0 Continue reading on Numismatic News