Newbie with a DWM Luger

[DoctorBob]

Hi everyone!
I recently bought a Luger. I was hoping for any information anyone has. It is an undated DWM. The serial numbers all seem to match, except for the magazine. The serial number is 4311a. The proof marks are on the left side and are a bit hard to make out.

From my limited research, I think it may have been made between 1908 and 1910. It appears to be military, as there are some regimental markings on the front strap. Any ideas as to what I have, or what it's worth?