DWM Commercial Survey--call for data

[bruce4guns]

20DWM (with stock lug) (previously known as 1923 Commercial) (includes 1914 Commercial variation)
*serial number( 7726)
*proof marks, left receiver
...crown over N, lazy (on its side)
...crown over N, upright (X)
*c/X c/X c/X military proofs?
*Caliber .30 or 9mm? (9mm)
*Sear bar
...full-length (x)
...relieved
*Export marked?
...GERMANY (Upper bbl assembly left side and magazine)
...MADE IN GERMANY (top of bbl)
...location of stamp
...not marked
*Chamber marked?
...none
...date
...American Eagle stamp (x)
*A.F. Stoeger inscription?
...2-line
...3-line
*Safe/Loaded?
*Police characteristics
...sear safety
...magazine safety
...police unit mark
*Any additional noteworthy chara (6 inch bbl with non navy sights)