Some information is coming in slowly. Even a PM from someone interested in possibly purchasing, the complete PM has been forwarded to the OP. The same person also put this tidbit of information in his PM, which I have copied here.
"This poster looks like the style of Ludwig Hohlwein, although I do not see any traces of his artist signature."
This person who contacted me, is a collector of WWII German propaganda posters, and appears to be quite knowledgable.