TSMG case
Hey Jim, Welcome. Are you talking about the modern cases that are currently provided with the TMSG? Where could I look at one of those? That government contract possibility is sure feasible. That's what I thought, too, when I found the Excelsior stamping on the latches.
I think this old case may have had compartments that were either removed before disposing of them at the refinerey, or maybe removed by my father-in-law: it's too late to ask him. There are some sporadically-located, "mystery" holes in the surfaces of the case for countersunk screws, about size 8. They could have anchored strapping for securing the gun, mags, and accessories; or they could have fastened compartment divider structures in the top and bottom compartments. There's not very many of these holes, however, only eight, if I counted correctly.
Just a theory but I'm looking at the case now and there are two countersunk holes in the top surface: one 12" from the left end, 2.5" from the front edge; and a second hole 5" from the right end, 4" from the back edge. That's it for the top surface, which probably held accessories only just to keep its weight down.
The bottom compartment, which likely held the gun and magazines, has two holes in the front surface: one is 9.5" from the right end. The other hole is 19.75" from the right end, between the handle fasteners. Both holes are just off the steel edging on the front surface of the bottom compartment.
On the left end of the bottom compartment there's one hole just clear of the steel edging, about 2" from the rear edge. On the right end there's one hole just off of the steel edging, about 2" from the front edge.
On the right end of the bottom compartment there's one hole just clear of the steel edging 1.75" from the front edge.
There's one hole on the bottom surface of the bottom compartment 4.5" from the left end and 3" from the front.
Well, I think this has about run this thread into the ground; but let me know what you think.
Jim