Artist's postcard 'Female nude, reclining sideways', 1911 "Karl Schmidt-Rottluff. Artist's postcard 'Female nude, reclining sideways', 1911. Ink and colour crayons on stamped postcard, addressed to Dr. Elsa Hopf, Hamburg. Poststamp Hamburg, 21.2.11. 9.0 x 14.0 cm. Verso inscribed: ""Frau Dr. Elsa Hopf, Hamburg, Bieber Str. 3/5 Mit Dank quittiert. Herzliche Gruesse zugleich Ihr S-R."" (ink). " Provenance: Estate of Dr. Elsa Hopf. StartPrice : 15000