I don't think that NOS stuff would come without boxes, as they say some of them do.
I have a couple of fur felt hats, fedoras, from the 1960s, Adams Executive brand, that I bought at a forum NOS auction. Some guy showed up in the forum with a tale about how he had bought the stock of an elderly, retiring Maryland haberdasher. It sounded fishy, but two trusted forum members jumped on planes and met the guy and it was for real, about 200 vintage hats after accounting for moth damage. The clothing was sold to a Hollywood costumer in a bulk sale, but the hat forum auctioned off the hats. I got two, but in retrospect I wish I had bought a dozen. And they were cheaper than new handmade hats. But completely different, done with a lost technology and a long-gone skilled workforce.