Guy Landau Posted May 17, 2004 Share Posted May 17, 2004 Rick, I assume that they are part of the date and maufacturing code that must have been faded and that they are probably made by Mullard. You might be able to detect the complete code with a magnifying glass. Quote Link to comment Share on other sites More sharing options...
3dzapper Posted May 17, 2004 Share Posted May 17, 2004 Thanks Guy. Rick Quote Link to comment Share on other sites More sharing options...
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