(!!!) (Best Single) 5755=420A Western Electric clear top NOS 1958 (2.0ma/2.1ma)

1 tube) 5755=420A WE clear top NOS 1958

1 section) 2.0ma Gm=1400

1 section) 2.1ma Gm=1500

Tested on Amplitrex

Vplate=180V

Vgrid=-.1V

Good like new Ma = 1.8-2.0ma

Good Gm = 1400-1500