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Old 07-26-2013, 11:28 AM
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DavidGoncalv DavidGoncalv is offline
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Join Date: Mar 2009
Location: Lexington, MA
Posts: 76
How about these tubes, with no internal coating:

http://www.earlytelevision.org/prewar_crts.html

http://www.fas.harvard.edu/~scidemos...eCrossCRT.html
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