[Milsurplus] GK-12-23 1/2 AC-AN ??

[Hubert Miller]

I may have asked this before....sometimes, oftentimes I have to jump to another task, or see something and forget to take it with me
and dispose of it without further delays...

I found this cable, 12 pin connectors, one straight one 90 angle, keyed between p2, p5, has paper tag "Part No. 65F13",
looks maybe 10 ft., pretty nastily white-fungused but thankfully, not sticky, so I could clean it up....
90 angle connector is GK-12-23  ½ AC-AN
straight connector marking faded but looks like GK-12-21 ½  AC-AN

What is it for? Needed ? I am pretty sure it doesn't fit any of the few Navy pieces I have.
-Hue
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