(!!!) (Best Value Pair) 26 RCA/Cunningham ST-14 used/good 1940's (3.8ma and 3.8ma)

1 pair) 26 RCA/Cunningham ST-14 used/good 1940's  in white boxes - same build

1 tube) 3.8ma Gm=800 Cunningham

1 tube) 3.8ma Gm=700 RCA

Matched on Amplitrex

Vplate=180V

Vgrid=-14.5V

NOS Ma = 5.5-6.0ma

NOS Gm = 1100