gudrun piper serielle elemente i 1973 acrylic on wood 84 × 84 cm2′ 9 1⁄16″ × 2′ 9 1⁄16″ reverse signed and dated inquire hide name email text hello, i am interested in the work "serielle elemente i" by gudrun piper. could you please provide information about this work and its availability. thank you is part of the exhibition art brussels 2025