Hello,
Here is a picture from the cover.I have seen it in Jan C.Still Axis pistols, p 217.
That Police armorers book is not only contenting the Luger, it is showing all Pistols and wheapons in police service to that time. For example the Steyr M1912 (Steyr Hahn), Sauer&Sohn M1913, Beh�¶rdenmodell, S&S M1938, Walther PP/PPK, Dreyse 7,65mm, MP34 Schmeisser,etc.
Only the Luger is in a colored page - may be the author R.Fischer did like it as we do?
That book is be seen in different covers as well.
Have one with a paper cover from 1940 - not so nice as that one.
It contents a discription of the Schiwy safety (Police sear bar safety) on the luger and there are some sentences to find about the muzzle cover, which is the same, used for the conversion kits.