Last of the Roundies?

[kx250rider]

I think it's a cheap Magnavox from '70. There was also an RCA with a modified CTC-38 to drive a 21" round tube, but that would be a year or 2 before the Magnavox, I think. I'm not sure what year the JVC (Delmonico-Nivico) roundies were, but likely 1967-70. Commercial and industrial applications kept the 21" round color tube in daily use all the way to at least the early 2000s, such as a few tri-color radar scopes at airports, and other military uses. Last I heard, the HR21GVUP22 (or close to that number); the mil-spec roundie, is still in the Navy catalog.

Charles