My first encounter with Executone equipment was back in the mid 1970s, long before they got into telephone systems. They were the masters of intercom systems, as in internal-only, hence inter (inside) com (communications). They had some beautiful hardware, much of which was in nice wooden cabinets. It's a shame that they weren't able to stay on that track. That kind of hardware, brand-new, would sell like wildfire for people who like the classic look and have deep pockets.
Can you imagine an IP-based intercom system housed in hand-crafted oak cabinetry? Am I onto something here?