I often share Usagi Electric links here (yeah, am subscribed to them) but here’s something even more unusually cool: teletypes, the real mechanical kind, with 5-bit character encoding, not the “glass ttys” that still hide in the Unix lore and terminology:
Was a Glass TTY ever a real device? Did they ever make Video Terminal?
Yes, many.
I personally am always on the prowl for a DMD 5620.
By the time of glass terminals, there were many entries in the market that were much cheaper than a branded Teletype, so the few models of CRT Teletypes that were released (the Dataspeed 40 and the DMD being the most famous examples I’m aware of) were not ever sold in the kinds of numbers that competing devices shipped.
Keep in mind also that there were just not that many of the true glass TTY-style terminals (as opposed to later terminals with cursor positioning, graphics or semi-graphics, adjustable fonts, etc.) around. By the time of the VT-100, glass TTYs were dead.
Sophisticated full graphics terminals like the DMD were expensive (it was essentially a workstation in itself), and by the time it shipped in the mid-80s, desktop Unix workstations were coming into their own.
Did the high price of the terminals kill the portrait style display concept or was there politics involved?
Great video!
But, what is going on with the PCB (or Bakelite board, I guess) that holds the electro magnets in the decoding unit? Quite fancy… 
(Detail at 23"11 into the video. Mind the printed pattern.)