On the case, one side of the locking latches was probably broken and completely removed by a previous owner, along the way.
I covered the area with a bit of pee; & stick felt and then installed a small (4-40) stainless steel screw, washers, and a nut to secure the left side of the case.
I was planning to try to hunt down another case...but I think I am "good" with this adhoc repair.
.