Lithograph. 12/23. Signed and dated in pencil lower centre: R. Serra 91, as well as titled lower left: S.K. Sheet size 24 × 27 cm on handmade paper by Arches. Published by Verein Situation Kunst, Bochum. Printed by Yenö Gindl/Gerhard Steidl, Steidl Verlag, Göttingen.