Prince of Pearl splatter abstract collection . Limited edition piece of nine piece collection ! ACEO stands for Art Cards Editions and Originals, aka ATC?s or Artist Trading Cards. They?re miniature pieces, 2.5 inches by 3.5 inches, about the size of a baseball or Pokemon card. Collecting ACEO?s is a great and affordable way to buy original art. The uniform miniature size makes them all the more charming and ideal for storing and collecting the same way you?d keep other trading cards. This is a one of a kind piece on high quality paper. It?s numbered signed by the artist on the back. It is neither matted nor framed.