ACEO-Art Cards, Editions and Originals are tiny trading card sized pieces of collectable art, always measuring 2 ½” x 3 ½”. These highly collectible cards are as varied in theme, composition and materials as are larger works of art.

Historically, Artist Trading Cards (ATC's) were 2.5" x 3.5" original works of art traded only amongst artists.
An ACEO is exactly the same thing, but is intended for sale rather than trade. This acronym was created to respect those artists who are passionate about ATC's being trade only works of art. ACEO's provide a venue for artists to sell their miniature work and for the public at large (including non-artists) to collect these wee masterpieces.

It is an affordable and addictive way to collect art – your favorite artist, subject or anything that catches your eye.  

I love the idea of being able to collect works of art from the artists that move and inspire me without taking up all of my wall space!  I currently have most of my ACEO collection displayed in baseball card pages within a very pretty photo album, and then I have a couple frames with mats that seem to fit well.