reiner kallhardt permutation 9 1962 oilpaint, polyester 80 × 80 cm2′ 7 1⁄2″ × 2′ 7 1⁄2″ signature reverse inquire hide name email text hello, i am interested in the work "permutation 9" by reiner kallhardt. could you please provide information about this work and its availability. thank you is part of the exhibition artist talk reiner kallhardt artistic sculpture or architectural utopia?