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1 pair) 1619 RCA NOS 1960-1964 reboxed
1 tube) 52ma Gm=4800 (1964) in 1965 box
1 tube) 53ma Gm=4620 (1960) in 1965 box
Matched on Amplitrex
Vplate=300V
Svcreen=250V
Vgrid=
Good Ma = 44-50ma
Good Gm = 4000
2.5 Volt filament
15 watts