WHAT ARE ACEO CARDS?
 
ACEO stands for Art Card Originals and Editions. They are similar to ATCs (Art Trading Cards) except that the former can be reproduced and sold, while the latter is for trading only, hence the name. They must be standard size of 2.5 x 3.5 inches. ACEO's originated on Ebay as a way of commercializing this art form, and are a huge success online.  You can browse and bid on my rotating ACEO collection by searching on Ebay for "ACEO Isabel Bonilla".