ACEO Stephanie Small Originals 2-1/2" x 3-1/2" (standard ACEO size) About ACEOs: These lovely little cards can be used to trade, collect and display. ACEO stands for Art Cards Editions and Originals and they're a great way to get started in collecting original artwork. Art cards are less expensive to buy and ship than wall hangings and large original art pieces. They look cute as display pieces in doll houses or ( Breyer ) model horse photography. You can decoupage them onto boxes and other items too and they look quite snazzy! Want to Know more About Artist Trading Cards (ATC/ ACEO): http://en.wikipedia.org/wiki/Artist_trading_cards