first luger

i just bought my first luger and i couldn't be happier.I'm not into the collecting aspect of them...yet, but i am curious to know more about my gun.I have an all matching 42 byf serial 7688 unfortunatly it has an import mark, but like i said i didn't want a collector's gun.I was wondering what holster with what markings would be correct for this gun also what markings should the loading tool have?Is there anyway to find out where the pistol was issued to as in an area or individuals name or even just which branch of service.And can anyone suggest a book that would cover these questions and more thanks for any help you can give this novice.GARY R.