Art Exhibition Poster, Horst Janssen, Floral Arrangement, Galerie Berggruen, Paris. Condition is Used. Size 15.75 x 23 inches. This poster was created in 1981 for a Horst Janssen exhibition at the Berggruen Museum in Paris, France. Horst Janssen (1929-1995) was a German drafstman, printmaker, poster artist, and illustrator. He had a prolific output of drawings, etchings, woodcuts, lithographs, and wood engravings. This poster depicts a vase of flowers past their prime in shades of pink, purple, gray and black.