RARE TUNGSRAM UK  ECC83 12AX7

MULLARD BLACKBURN PRODUCTION

I63 B5A2 CODE FROM JANUARY 1965

 THIS IS IN SUPERB  CONDITION AND TESTED EXCELLENT 



AVO VCM163 TESTED




TUBE 1 - Ia  1.65/1.5              gm 2.0/2.0





100% = Ia 1.2   gm 1.6




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