This is for display only. Heaters appear to be open circuit. An interesting button valve.
GE JAN 6AB4 EC92 Single Triode Valve NOS Boxed
Set Of (4) RCA 811A VT-217 Electron Power Triode Vacuum Tubes Tested NOS
New old Stock RCA 3A5 double triode valves tubes
Lot of 4 = Hitachi 6BN8 Vacuum tubes double triode - NOS/NIB MINT
PM5X Mullard triode. NOS, NIB + instructions. Fully tested - 100%. See pictures.
ECC83S (12AX7) JJ Electronic Balanced Triode Vacuum Tubes Valves Tested UK stock
