(1) Tested Strong GE 19AU4GTA Tube Date Code 63-13 General Electric 19AU4 GTA

(1) Tested Strong Deforest Sanabria 19AU4GTA Tube Date Code 61-09 19AU4 GTA

Raytheon 6AU4GTA NOS NIB Radio/Amp Vacuum Tube - Lowest $ - Free Shipping !

(1) Tested Strong Motorola 19AU4 Tube Date Code 5727 Half Wave Rectifier

(1) Tested Very Strong Raytheon 6BL7GTA Tube 6BL7 GTA Tube Twin Triode Tube

RCA 19AU4GTA Electron Vacuum Tube NOS TESTED P82

(1) Tested Strong Motorola 19AU4 Tube Date Code 57-17 Half Wave Rectifier Tube

RAYTHEON - NOS 25BQ6GT/B Electronic Tube - Tested STRONG