Question about take down tool

[rldarmstr]

I am new to this forum and new to the Luger, as for as any serious knowledge is concerned, so please bear with me.

I recently had a discussion with my father about his Luger and noticed that there was a small pocket in the top of the holster, but it was empty. Looking around on the auction sites and here on this site I see that the pocket is for the disassembly or take down tool.

Naturally I decided to see if I could find one to fill that void. As I should have known, reproductions abound and then too there are the biquitous markings, none of which are familiar to me.

Can someone tell me how I might discern a real tool from a repo? Also is there any significance with regard to age, time of manufacture, or location of manufacture, of these tools?

The Luger in question here is a DWM with a 1918 date and is apparently in a Police holster ( the hoslter question I am going to verify on the Holster forum as soon as I get a picture).

Thanks in advance.

Robert