GORGEOUS RCA CTC-16 Console on eBay!!!!

[Electronic M]

Originally Posted by bandersen

I believe they made a 21" Princess model in Brazil. I don't think the 21" head will fit on a Princess cabinet. The CRT also has different specs.

ISTR someone on that predicta Facebook group you're part of sticking a debutante head onto a pedestal cabinet, so the reverse should be possible.
As for CRT compatibility the only difference is heater voltage. A series chassis doesn't even notice that, but a parallel heater chassis like the princess can be adjusted to compensate...In the princess and the similar chassis in the continental console all you have to do to compensate for a different heater voltage is swap the heater hot lead between the 2V tap and the 6V tap on the power transformer.

I've ran 17" headshells as test jigs for 21" chassis before so this can be done.