Luger year by serial?

[Norme]

Hi Tom,
Yes, I could go down stairs to the gun room and look it up for you in Jan C. Stills' "Imperial Lugers" but I'm not going to. I don't want to deny you the pleasure of looking it up for yourself in the finest Luger reference work ever written. It's a little dated now and it ain't cheap, but it will transform your life as a Luger collector, at least it did mine.
Regards, Norm