(!!!) (Recommended Pair) 6F6 RCA metal can NOS 1940's (44ma and 44.5ma)
By Tube World
$ 59.99
1 pair) 6F6 GE metal can NOS 1940's
1 tube) 44.5ma Gm=2860 (VT-66=6F6 RCA) Farnsworth TV and Radio box
1 tube) 44.0ma Gm=2710 (RCA branded DELCO) 3 dimples around top of metal can
Matched on Amplitrex
Good NOS Ma = 32-34ma
Good NOS Gm = 2400-2500
See more: vacuum tube