35L6GT Sylvania NOS radio amplifier audio vacuum tube valve tested Italy 35L6GT – IBBY
Sylvania 12AT7 6679 vacuum tested GOOD | Reverb
7F8 High Frequency Twin Triode Tube. Designed for use as a grounded grid radio frequency amplifier or as a frequency converter at frequencies up to 300 mc. MFR: GE, RCA, Tung Sol.