This is the original art for the cover of the fourth Sheldon book, "A Blizzard of Lizards." It's drawn in lightfast, archival inks on heavy, acid-free, Bristol vellum stock. The cardstock itself measures 11" x 14", while the drawn image is roughly 10" x 10".
The auction also includes a bonus concept sketch of the cover...created with pencil on a separate piece of non-archival artist's paper.
Head on over: Time is almost up!