dated 1937
exhibited by Capt. Schulz
Collection Capt. Schulz
written 1934
offered at 66. Jennes & Klüttermann Auktion, 6. August 2016, as Lot #3246 for 100 EUR
Collection W.Jonsson
Collection Wilbur Jonsson
dated 23.7.32
offered at 359. Köhler Auktionen, March 2015, as Lot No. 5654 for 80 €