Quote:
Originally Posted by benman94
Does anyone have concrete information as to when exactly commercial production of the 15GP22 began, and when it ended?
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Maybe this is the back-end of the puzzle. Link to the graphic on my site of the only 15GP22 date code I know of that is not from 1954; it is from 1959 (in case the link doesn't work).
http://www.earlytelevision.org/Deksn...926-15GP22.jpg
Pete