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Advent VB1000A
Eric,
I owned two of those. They were very advanced at the time. The CRT was a clever innovation by Henry Kloss that placed the CRT electron optics and Schmidt optics in the same vacuum envelope. It made for a very expensive CRT. I wouldn't mind having one for my tube collection. This projector was one of the few then to have a comb filter in the color decoder. These sets used miriad plug in modules and the problems with intermittent contacts are common. Almost all the fragile surfaced curved screens were damaged through attempts at cleaning. You could not physically touch them or you'd ruin the fine grain raised aluminum surface. There was also a set of plastic disc corrector plate lenses available that you could place on the front of the 'guns' to project onto a flat surface screen.
I wouldn't consider one of these to have any real monetary collectible value IMO.
Rob
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