The S (Superiore) variant of the Ba.15 was aerodynamically refined and first flew in October 1929 according to a German source. The engine was often a seven-cilinder Walter Venus radial but here it is a nine-cilinder Walter NZ-120. Italian air force photo. Photo from: Dan Shumaker collection

Flying his Walter Venus-powered Ba.15, Jean Pierroz from Lausanne came 14th overall in the 1930 European Challenge for touring aircraft. Seen on the right here in an airship shed is a Spanish DH.60G Moth, M-CKAA / T5, and on the left a Spartan Arrow, G-AAWZ / K4. Staaken was overtaken as Berlin's airport by Tempelhof, which was much more central. The field is now a solar farm. Photo from: Walter / Státní oblastní archiv v Praze