(!!!) (Best Pair #3) 448A Western Electric tipped top used/good 1965-1966 (28ma and 29.2ma) (same Gm)
$109.99
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1 pair) 448A Western Electric "tipped top" used/good "D" getter halo in white boxes 1 tube) 28.0ma Gm=26,000 (6613=1966) 1 tube) 29.2ma Gm=26,000 (6526=1965) Amplitrex Test Data: Vplate=135V Vscreen=135V Vgrid=-2.5V Good Ma range 18-25ma Good Gm = 25,000 DIY pentode
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$99.99
$109.99
(+$10)