To me , the early sony Trinis are the First modern TV, The clarity and sharpness can't be matched. I was so impressed with first two I got, I saved several more early trinitron sets. Not much interest generated when I posted two in the classifieds. The gun opening is larger, and the CRT uses a screen instead of a mask. You can drive these sets into saturation and color will try to stay well defined with image detail too. Info from a EARLY trini ad explaing CRT& from Sony company history web site. I think the newer trinitron crt tubes may be used as a replacement for older sets? Not many saved from 1968 to 1971.