(!!!!) (Best Pair 1940”s) 6L6GA Sylvania and Philco Sylvania coated glass NOS 1944 (67ma and 67.2ma)

1 Pair) 6L6GA Sylvania and Philco Sylvania coated glass NOS 1944

1 tube) 67.0ma Gm=5950 Philco

1 tube) 67.2ma Gm=5700 JAN-CHS-6L6GA

Vplate=250V

Vscreen=250V

Vgrid=-14V

Good NOS Iplate = 65-70ma

Good NOS Gm=5500-6000

Vh Ih VaMax Vg2Max PaMax Pg2Max
6.3 0.9 360 270 19.0 2.5