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Chuck:
I don't recall anything earlier than the TV123 out of the lab into serious production. I never saw a Philco 15 inch in use. One chassis version may have been to drive the Apple tube since it required some different circuitry. A few got into engineer's homes for test, but programming was limited before 1957 when NBC went all color.
Do you have a source for the Apple documents yoreference? I would find them most interesting.
Don
Product prototypes were sometimes sold to employees on a limited basis.
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