(!!!) (Recommended Pair) 76 Sylvania NOS - 1 tube branded National Union 1947 era same build (5.3ma and 5.6ma)
Was $49.99
SAVE 11%
$44.44
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1 pair) 76 Sylvania NOS original boxes 1940's same build 1 tube) 5.6ma Gm=1400 Sylvania 1947 era - mica flake inside tube 1 tube) 5.3ma Gm=1300 branded Nat. Union 1947 Matched on Amplitrex Vplate=250V Vgrid=-13.5V Good Ma range = 4.5 - 5ma Good Gm range = 1300-1400
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$49.99
$44.44
(-$5.55)