Gary,
The marking on the loading tool does appear correct to me, but again - I am no expert on these things. Your pictures are excellent and I am glad to see that there are other photo-freaks out there. In addition to Lugers and guns in general, I also collect old cameras and other interesting hardware.
Here's a picture of the Lugers I owned a few years back, top to bottom:
1900 US test Luger
1918 Erfurt
1911 DWM
1938 S/42, replacement heavy barrel - my shooter
1942 byf "Black Widow"
ditto
Since then I've added a few and sold one Black Widow.
Balder
PS BTW, My in-laws live in Edmond, OK