Coin

Coins are a universal currency found throughout the universe and its many dimensions. Their appearance in other dimensions suggests their origin to date back thousands of years when inter-dimensional travel was prevalent among the Tribe of Ancients.

Description
"The Mushroom Kingdom is overflowing with coins. You'll find them hiding under question blocks, grass, enemies, and more."

- North American website

Coins are floating, oval, golden shiny objects. They're used in a lot of locations often used as its main currency, though some locations use it as a secondary currency, as they have created their own regional coins as seen in kingdoms such as the Metro Kingdom and Cap Kingdom.

On both sides a "1" is displayed in the middle, displaying its worth as just one coin, despite how large it may seem. The true worth of a gold coin is dependent on the number written on it, the highest being "100".

Next to Star Bits, coins are another type of food that Lumas like to eat, with their transformation working effectively the same.