Fauxpaw: I was contacted by email by two of the collectors. They promised photos, but have yet to send them, despite several reminders. One claims to have a NIB 22 inch CBS CRT too. Until I see photos, I don't know if the sets actually exist.
One of the Westinghouse sets is owned by a very private collector who hasn't released any photos.
We have a CBS tube at the museum:
http://www.earlytelevision.org/color_crts.html