"Tona" is an original oil painting by me Robert W. Walker. The piece is painted on masonite, and protected by a gloss varnish. Tona is quite LARGE , its measurements are 20" x 48" making framing easy. My Animal Hybrid series along with my mermaids are two series that I will probably never be finished, as I love them both very much. Tona is the first piece that I actually used a live model, now I only use live models.