7-cylinder radial and 50 hp engine. Without more information at the moment.

From Appendix 12: In a number of the "Flugsport" magazine (published from 1909 to 1945) a 7-cylinder radial is mentioned but with the name of Kielieg. In this publication we have controlled the name of Kieling for a 5-cylinder engine of this brand. Most possibly it is the same brand.