6L6G quad tube RCA G Ga GC el34 350b valve rca 5881 6p3s metal 12ax7 wgb TV-7
Closely Matched Quad . Coke Bottle Type Tube. TUBE's TEST RESULT's Smoked Glass Bottles. TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES!