Derpy Tiger Riso Art PrintI sold out of these prints at SDCC and set aside the prints with registration issues. Riso prints are printed one color at a time so registration issues can occur when the paper isn't aligned perfectly. Colors can be printed off the mark. Personally, I like it because it creates fun variations in color. So there are two grades for these prints: Grade A where the registration is slightly less than perfect, and Grade B is more noticeable (the pink is