Moteurs en Estrella Siemens Sh 13a Original, undated company leaflet in Spanish language. The Siemens Sh 13a was a five-cylinder air-cooled radial engine for aircraft, introduced in 1928.
leaflet, large format 6 Seiten / pages 2 photos, drawings with measurements good condition, one page wrinkled Berlin Siemens & Halske AG Art.Nr. 13541