Artist Trading Cards (ATC) - Traded amongst artists.
Art Cards, Editions & Originals (ACEO) - Sold to artists and collectors.
Artist Trading Cards and Art Cards are one in the same. They are referred to as Artist Trading Cards when traded and Art Cards when sold. The only requirement is the size. The size is 2.5 inches by 3.5 inches. The same size as other themed trading cards. They fit perfectly into the sleeves and sheets that are created for regular trading cards.
Artists from all over the world create these little works of art in a variety of different mediums and subject matter. Artists trade them with other artists. Artists sell them to those who love small art and to those who would love to collect art but cannot really afoord to buy the larger pieces the artist is selling. This also allows people to collect a larger variety of art since they are only buying little pieces. The art cards are meant to be sold at lower prices and to reach a wider audience.
The Art Cards I have created have all been original watercolor paintings. I store them in a 3 ring binder filled with sheets of trading card sleeves. I sell my original watercolor Art Cards through my Etsy Shop.