John, Ed,
The book was offered for sale by a German collector, who published a book on Sauer guns, so the source is reliable.
There should be over 70 photos and illustrations, including pics of production, testing, the cafetaria, etc... and it includes a foreword by the chief of the heereswaffenambt.
One page, listing the photo sources has been ripped out otherwise it is complete. Not bad for a 1939 issue.
I can't wait to get it in my hands
Here are some pictures from the auction:
