(!!) (Good Value Pair) 311B WE used/good, faded getters 1960 and 1967 (28ma and 33ma)

1 pair) 311B WE used/good faded getters

1 tube) 28ma Gm=2700 (6039=1960)

1 tube) 33ma Gm=2950 (6713=1967)

Tested on Amplitrex

Vplate=180V

Vscreen=135V

Vgrid=-15V

NOS Ma = 30ma

NOS Gm = 2900