O wao! This is deja vu stuff.
I can remember like it was yesterday, uncrating our very first
Rectangular color set for the sales floor. Lots of OOHs and AHs after knowing nothing but Roundies. It was the CTC-17 in a little floor-standing model like the one in the OP.
One interesting feature peculiar to the '17 was a single transistor located somewhere in between the video detector and sync areas.