(!!!!) (BEST PAIR #1) EL37 Mullard UK branded Amperex gray plates used/strong 1968 (78ma and 76ma)
$299.99
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1 matched pair) EL37 Mullard UK branded Amperex gray plates used/good 1968, 2 round getter halos, in white boxes, good getter flashing - faded date codes 1 tube) 78ma Gm=10,000 1 tube) 76ma Gm=9650 Good used mA range 70-80+ Good used Gm range = 9,000+ Recommended for - CARR MERCURY 2003- Fisher 80-AZ
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