Indeed, he talked for quite a while about his heyday in the mid '70s, when he was buying old pins by the hundreds. He had 500+ at one point. He would refurbish everything and slowly sell them for home use.
I didn't comprehend the full story, but he said there was a situation over in Louisiana, mid '70s, where state law changed somehow and mandated a technology update on coin ops (some feature couldn't be EM any more, it had to a video screen(?). As a result he said operators were dumping so many EMs they were being left for trash pickup all over the place . Don said he was renting entire warehouses to store his pins.