The couple profiled in this piece are the subjects of the documentary Herb and Dorothy. I gave it a watch and I was entertained. It is available on Netflix streaming[1].
I remember one of the pieces of their collection was a few inches of frayed rope with a nail through it. Art is always in the eye of the beholder, they always bought what they personally liked.
Sad to hear that Herb passed away a few years ago. Their like may never been seen again...