NOS/NIB RCA 6SN7GTB Dual Triode Vacuum Tube - Tested

Vintage RCA 6BH11 Vacuum Tube NOS – Compactron Triode/Dual Diode – Radio TV

2 Vintage 25Z5 Vacuum Tubes Tested on TV-7D/U Tube Tester Cunningham & RCA NOS

NOS RCA CUNNINGHAM TYPE 26 TRIODE - TESTED GOOD - PASSES NEW TUBE LIFE TEST

NOS NIB RCA 12AT7 Audio Vacuum Tube Tested / 2% balanced @ 95/96 using B&K 606

One CUNNINGHAM 12SR7 Tube NOS NIB Strong Triode & Balanced Diodes TV-7 Results

RCA 6AL5 Vacuum Tube Dual Diode Tested Strong 100/100 Vintage Audio Radio

RCA 6080 Vacuum Tube Tested Strong 1956 USA Dual Triode w/ Box