ACEO, ATC, SFA, ZNE - Artist Trading Cards on Ebay
I am a member of several groups for artists who sell their work on ebay - ACEO, ATC, ZNE, and SFA. ACEO is short for art cards editions and originals. ATC stands for Artist Trading Cards. ZNE is short for VariaZioNE. SFA is short for Small Format Art. The idea behind them is that artwork, as prints or originals, be 2.5" x 3.5" inches and thin enough to fit into standard sports trading card sleeves and albums of that size. They are a popular and highly collectable art form on ebay.
The painting called "Sully the Westie" was sold on ebay.