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#11
02-08-2018, 02:28 PM
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Very likely cost. Look at how few early TVs used aluminzed CRTs. 10BP4 and 12LP4 were far, far more common. I'm curious what the price different was back then.
It's so much easier to setup an aluminized CRT. No need for a trap magnet or all the time fiddling around to get it positioned correctly. 
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