Description
(!!!) (BEST PAIR #3) 47 RCA branded ARCTURUS NOS 1940’s (40ma and 40.2ma)
1 platinum pair) 47 RCA branded ARCTURUS NOS 1940’s
1 tube) 40.2ma Gm=3000
1 tube) 40.0ma Gm=2800 slightly tilted glass
NOS Ma range 26-31ma
NOS Gm range 2300-2500
(2.5 watts)
(2.5V filament)