Rare MULLARD Blackburn Great-Britain12ax7 ECC83 I61 same dates codesHere is a rare Mullard 12ax7 matched quad. test very strong, TV7 test 42/42, 40/42, 42/44; 42/42 were 32/32 is good or 65%. They are closely matched and have same dates codes. USA registered shipp...150.00
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Rare MULLARD Blackburn Great-Britain 12ax7 ECC83 I61 same dates codes strong matched tube quad [Expired]
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Member since September 2014
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