My grandfather brought home this 1917 Luger. I have stories of him taking it from a dead german officer. (Note: My grandfather past away when I was a child so my memory is very fuzzy) From what I can tell, I found the number 90 stamped on several pieces and the number 2890 on the bottom part of the barrel. It has 1917 and the letters DWM stamped on top and four characters stamped on the opposite side of the where the safety is. (Note: I have very little understanding of the partsof a firearm.) The gun has it's original holster that includes two tools. One long piece that I assume is to clean the barrel. Another "key" looking piece that I do not know what it is used for. (please refer to the pictures)
Like I said in the Title, does anyone have an idea of value on a piece like this?