Hi,
it's something like a "Kabel" (german word for cable) by Rudolf Koch (1926). Search for it:
http://www.abstractfonts.com/search/?q=Kabel
It's should be a Kabel Medium. More Informations about the typeface "Kabel":
http://www.abstractfonts.com/forum/thread/37208/25818#post25818
Bye bye
Please help me identify this font. Thanks in advance