GZ345AR4MullardBranded RaytheonBaseBlackBottle HeightHalfCode On Tubef32 B4K1CountryGreat BritainFactory CodeB - Mullard, BlackburnGetterO-Getter DiskGlass ColorClear GlassMicaDoublePermanentidebo7v0vuPin ColorSilver PinsPlate ColorMatte GrayMore GZ34 type tubesGZ34, 5AR4Branded ZaerixGZ34, 5AR4Branded SonotoneGZ34, 5AR4, F32MullardBranded SylvaniaGZ34MullardBranded PhilipsGZ34PhilipsBranded MullardGZ34, F32Branded ValvoGZ34, 5AR4, F33Branded AmperexGZ34MullardBranded IttGZ34Branded PhilipsMiniwattGZ34Branded PhilipsMiniwattMore 5AR4 type tubes5AR4Branded National ElectronicsGZ34, 5AR4Branded ZaerixGZ34, 5AR4Branded SonotoneGZ34, 5AR4, F32MullardBranded SylvaniaGZ34, 5AR4, F33Branded Amperex5AR4, F33PhilipsBranded Rogers5AR4, F32MullardBranded TriadAmperex5AR4MullardBranded Ge5AR4, GZ34, F32MullardBranded Marconi RadiotronGZ34, 5AR4, F32MullardBranded AmperexHewlett PackardMore tubes manufactured by MullardEL34, XF2MullardBranded SylvaniaCV491Mullard6CA7, EL34, XF2MullardBranded AmperexEL34, XF2MullardBranded PhilipsEL37MullardBranded AmperexECC33, FX1MullardBranded ValvoEL34, XF2MullardBranded PhilipsECC82, I61MullardBranded ValvoEL34, 6CA7, XF2MullardBranded Siemens12AU7, K61MullardBranded TungsramMore tubes branded Raytheon6CA7, EL34MatsushitaBranded Raytheon12AU7ABranded Raytheon12DF7Branded Raytheon12AX7ABranded Raytheon12AX7Branded Raytheon12AX7Branded RaytheonVT-231, 6SN7GTWestern ElectricBranded Raytheon7027ABranded Raytheon12AX7, ECC83ToshibaBranded Raytheon6BH6, CK6661Branded Raytheon