[Milsurplus] Unidentified antenna box ?

[Hubert Miller]

I found this black wrinkle finish box 3.5 x 2.5 inches, on a two-Dzus base 3.5 x 4.5 .
The box on one narrow end has 3 small pushee connectors in a V pattern. These are 'Command Set' receiver size pushees and each bears letter A.
The connectors are stamped numbers in this way on the V pattern:
( box top )
  3   2
     1

on one long side are two screw wire terminals labeled  5 and 4.
I can see on top where a plate of some kind about 2 ¼ x 5/8 inch was removed; was held by two screws.
If no one can identify this thing, maybe I'll open it up plus get a couple photos.
I do not think it is something that belongs with any equipment I own.
-Hue
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