Here are the 5 most popular bullion coins in the world based on total sales:
American Eagle: These coins are available through the United States Mint and come in various sizes. Considered the sign of American currency, this is by far the most popular bullion coin in the world.
Canadian Maple Leaf: Showing a maple leaf on one end and Queen Elizabeth II on the other, the Maple Leaf is available through the Royal Canadian Mint. After the American Eagle, this is the most popular coin on Earth.
American Buffalo: After the Eagle, this is the most prominent American gold coin. Released initially in 1913, it is still an extremely liquid coin to own.
South African Krugerrand: Named after the first president of South Africa, the Krugerrand is available in many sizes. It is not produced anymore and is a little rarer compared to the other options. However, it is still traded widely, and you can readily find it through online retailers.
Austrian Philharmonic: This is a very recent coin, first minted in 1989. The Austrian mint guarantees each coin and is available in multiple sizes.