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This set is either a CTC9 or 10.
You can tell the difference by what the vertical sweep tube(s) are/is...
If it uses a 6FQ7 and a 6AQ5, it's a 9.
If it uses a single 6EM7, it's a 10.
Confidential to damen...
If you have a CTC7 chassis that does not have printed circuit boards, I can assure you that it is the ONLY one EVER produced, and is truly one of a kind.
But I seriously doubt that...
RCA began using PC boards with their CTC4 chassis, and they never stopped.
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