(!!!) (Best Pair #2) 6L6GA Philco Sylvania and Sylvania coated glass NOS 1944 (76ma and 78.5ma) (Highest mA and Gm)

1 Pair) 6L6GA Sylvania coated glass NOS mid-1940”s

1 tube) 76.0ma Gm=6250 Philco by Sylvania original box

1 tube) 78.5ma Gm=6500 Sylvania JAN-CHS-6L6GA white box

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