Remarkable in that it is unremarkable. I have seen HPM antenna'd cars w either what appeared to be a stock fixed antenna or this retractable style.
48" attached lead, 72" cable extension, 38" extended length. No mfgs markings nor any other markings/stamping.
Most, but not all, were mounted aft RH. This one was LH along quarter vents.
-minutia but original 65 HPM-