@en|Scanning of a December 1940 [[Soennecken]] advertising for the [[Soennecken 510|510]] model. Published on ''Kosmos'', n. XXXVII. Retouched by the author for a better sharpness. | @en|Scanning of a December 1940 [[Soennecken]] advertising for the [[Soennecken 510|510]] model. Published on ''Kosmos'', n. XXXVII. Retouched by the author for a better sharpness. |