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From what I have been able to piece together, by the late sixties Philco was making their own picture tubes, or at least some of them. Maybe they were able to crank out 21FJP22's extra cheap? I think they were selling roundies into '69 or maybe even '70. The later ones would have had what I guess was one of the most technically advanced chassis of any roundie.
If it were local...
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Bryan
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