(!!!) (Best Value Pair) 26 RCA ST-14 engraved base used/good 1930”s (3.9/4.0ma)

1 pair) 26 RCA ST-14 used/good 1930”s in white boxes – different top mica shape

1 tube) 3.9ma Gm=900

1 tube) 4.0ma Gm=800

Matched on Amplitrex

Vplate=180V

Vgrid=-14.5V

NOS Ma = 5.5-6.0ma

NOS Gm = 1100