6SN7GTBBranded RCAPinched TipBaseBlackCountryRussiaGetterBottom GetterGlass ColorClear GlassOther MarksSays made in West Germany on the glass, but actually made in RussiaPermanentidrwwk6p6ePlate ColorMatte GrayTip ShapePinched TipMore 6SN7GTB type tubes6SN7GTBBranded Relco6SN7GTBBranded Hit-RayItt6SN7GTBBranded Sylvania6SN7GTBBranded RCA6SN7GTBBranded Amperex6SN7GTBBranded Sylvania6SN7GTBBranded Ge6SN7GTBBranded CEI6SN7GTBBranded G.E.B.6SN7GTBBranded PhilipsRogersMore tubes branded RCA6386Branded RCA12AX7Branded RCA8417SylvaniaBranded RCA5692Branded RCA7591ASylvaniaBranded RCA7058RCABranded RCA12AX7, ECC83Branded RCA5881Branded RCA12AX7Branded RCA6BH6Branded RCA
