Someone made a comment on the other forum and to be honest, the more you roll it around in your head, the more it sounds plausible.
General George G. Meade
=
3GM
-k is the inspector.
It really sort of sound plausible. Fort George G. Meade Depot did have M1917's. Plus all the other rifles you see that cartouche on. They did do some repairs on rifles.
Other than the normal depots of SA, RIA, etc. Fort George G. Meade is the one that stuck out in my mind going thru the docs as different.
To add to this, I did see one more new Depot I missed during the war. Just in case it means something to someone, I will post it.
Belle Meade ASF Depot.