RAYTHEON - 12BE3 Electronic Tube - Tested STRONG

Tested Strong Raytheon 12AT7 ECC 81 Electronic Vacuum Tube

RAYTHEON - 12AX4GTB Electronic Tube - Tested STRONG

RAYTHEON - NOS 19AU4GTA Electronic Tube - Tested STRONG

RAYTHEON PEANUT TUBE - 6S4A - TESTS STRONG

(1) Tested Strong Raytheon 12BA7 Tube with Box Code 126 Pentagrid Converter (a)

(1) Tested Raytheon 12EL6 Tube with Box Code IO4 Dual Diode High Mu Triode (a)

4 x 12ax7a Raytheon-Japan Tubes *Strong Testing*1965 #P6