Rosenthal Germany Studio Linie Bisque Op-Art Vase Christa Hausler-Goltz Geometric op-art vase designed by Christa Hausler-Goltz, a graphic designer and artist known for designs in tapestries, carpets, wallpapers, furniture, clocks and ceramics. Measures approximately 8(H) x 7(w)-inches. Very good pre-owned condition with no chips, cracks or scratches. On base marked "Rosenthal", a€?Studio Liniea€ a€?Germanya€ and cast number 3777/20.