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Old 28th Feb 2012, 11:11 am   #70
humphrey
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Join Date: Aug 2008
Location: Bellac, 87. France.
Posts: 357
Default Re: Mullard Valve Tester Card Project

I have a numerical list that has no date or serial number. I has 842 cards listed including many that were later classed as "not issued" (ie 227 for valve 215P or Stentor 2 by Cossor).
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