1917 German luger

[fredt]

Good evening ,wish I had a great story about this gun but I got this when my grandmother passed . It was my fathers and she had it at her house because with 7 kids in our house growing up my mother didn't want to take any chances ! I really don't know much about this ,I did get it registered at the local police department so it is legal ! I'm curious about the history and value ,any help would be greatly appreciated !!!!