(1) NOS 6GH8A by Raytheon Premo Vintage Audio VACUUM TUBES Hickok 539C Tested

Strong Raytheon Zenith 6GH8A 3150/7300gm Grey Plates Copper Serious Tubes T407

Raytheon 6GH8A Triode-Pentode Vacuum Tube NOS NIB Tested Free Shipping

6GH8A - RAYTHEON - TUBE IN BOX

GE 6GH8 Vacuum Tube – NOS NIB – Triode-Pentode – USA Made – GE Electric

National 6GH8A tube NOS UNTESTED

RCA 6KZ8 Vacuum Tube Untested NOS Vintage USA Compactron Triode Pentode Audio