Vintage 1960s Karel Appel rhino and monkey framed print. The bold artist made his plate signature part of the image. The layering of inks can be seen on close inspection, showing the exceptional quality of this print. There is no edition or pencil signature present. Christiaan Karel Appel (pronounced was a Dutch painter, sculptor, and poet. He started painting at the age of fourteen and studied at the Rijksakademie in Amsterdam in the 1940s. He was one of the founders of the avant-garde movement CoBrA in 1948. He was also an avid sculptor and has had works featured in MoMA and other museums worldwide.