(!!!) (Recommended Pair) 26 Sylvania branded Zenith black plate NOS 1946 (4.9ma and 5.0ma) (rare) 1% matched

1 pair) 26 Sylvania branded Zenith black carbonized plate NOS 1945-1946 1% matched

1 tube) 4.8ma Gm=1000

1 tube) 4.8ma Gm=1000

Matched on Amplitrex

Vplate=180V

Vgrid=-14.5V

NOS Ma = 5.2-6.0ma

NOS Gm = 1000-1100