What was the life expectation of an '50's-eraly '60's color C.R.T.

[andy]

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[Dave S]

I know we're talking about '50s and '60s vintage tubes here, but I'm amazed every day that the 27" Magnavox POS I bought as a store demo unit in 1985 and has been in constant use every day since then still shows a half decent picture.

--Dave