Unit marked Lugers,
 

Just for interest sake, here is a list of my unit marked Lugers,

1910 DWM P08 #1186c 117.RMG.22
1911 Erfurt P08 #692 110.RMG.26 (R is in script)
1912 Erfurt P08 #286 84.RMG.29
1916 DWM P08 #3944a 93.R.5.3.
1916 DWM Artillery #7297a 95.R.2K.46
1917 DWM Artillery #2340 JR.448.9K

I also have a Reichsrevolver holster marked 2TB
and a 1936 dated holster marked 2/A.R.7.8.

I trust this information will be of some interest.