RCA ad, LA Times, 1961

[old_tv_nut]

Originally Posted by Steve D.

From what I've read Sylvania introduced their line of '65 color receivers in June of '64. These '65 models were the first to employ Sylvania's new "Color Bright 85" picture tubes using Sylvania's new rare-earth red phosphor. I don't have an exact tube/part #. Pretty sure these were 21" round tubes. 25" tubes were used starting w/the 1966 models.

-Steve D.

Yes, the first Sylvania tubes with rare earth red were round; I have ads saying that; but the tube number is not mentioned.