So I wore the shorts yesterday and was pleased with the ventilation capacity that the thin pad provided in the heat. That got me started on looking for the business on the tag. I had already determined that the address on the tag pointed to a residence in Suffolk county. A little public records research confirmed that it was sold by someone with that last name in 2016. More public information gave me a name: Rosario Ando, listed as deceased in 2000 in the SS death index.
If you have more information about Mr. Ando's enterprise during mid-eighties, I'd like to know about it. I'm no longer going to hold my breath over a matching jersey or singlet, it seems any early shimano tri-color-branded jersey should work. I'll have an easier time adding dura-ace to one of my bikes.