M.C. Escher Solid Object Fish This is a solid object based on M.C. Escher's famous plane tessellation of fish. It appears to be a product of Parastone. The material is plaster? I'm not sure of the details. I found this for sale on eBay a while ago and won the auction. I've only seen it sold once before, at a museum shop during an Escher exhibition in Japan, so I think it's quite difficult to find in Japan. The fish section is about 16.6 x 15.0 cm. The styrofoam cushioning and the outer box have dents, folds, and areas where the material is scraped off.