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I don't know exactly what the 23GP22 problems arose from. Not sure if it could be attributed to cathode problems or general quality.
Generally, CRT life depended on the cleanliness of the production and the thoroughness of evacuation and gettering, as well as the cathode characteristics. Motorola CRT production seems to have been mediocre, but not the worst, which "honor" would have to go to Admiral.
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Old TV literature, New York World's Fair, and other miscellany
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