The connectors are RF type coax made for Microwave frequencies, which probably means this was from a switch. The connectors would be tinned brass the center likely gold plated, the solder joints for them are silver solder since you dont want it to bleed EMF. If you had a high quantity of these (20lbs or so) I'd buy them from you.
Most likely this was for either an internal RF comm system for a large warehouse or store OR more likely cellular. I've been getting LOTS of cellular components lately, seems to be the new e scrap angle.
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