The Artist Trading Card (ATC) is a small work of a baseball card size (2.5x3.5 inches, 64x89 mm).
On the back of the work there are many people who include an author name, HP address or title.
Create original, limited edition and series and tell your ATC story.
ATC is basically not to sell or replace the ATC only
ATC Back Rubber Stamp
(From Amazon.co.jp)