ACEO Original Skull Ink Drawing 2.5x3.5 by Bahar.Imaginarium, OOAK Illustration

ACEO stands for Art Cards, Editions and Originals: a miniature artwork made at exactly 2.5"x3.5", the size of a trading card. Collectors buy them as small originals, often straight from the artist.

The title describes it as an original, made by hand. For a card you plan to keep, ask the seller for a signature on the back or a certificate of authenticity.

Not this one, but most ACEO artists list new cards often. Follow the seller on eBay, or see what else they have listed right now.

Slide it into a penny sleeve, then a 35pt top loader, which fits a standard ACEO snugly. For a growing collection, nine-pocket binder pages keep cards flat and together.