12AU7K61MullardBranded TungsramPinched TipCode On TubeK61 R5LCountryEnglandFactory CodeR - Mullard, MitchamGlass ColorClear GlassMicaDoublePermanentid24bhl60w9tPin ColorSilverPlate ColorMatte GrayPlate LookRibbed / ScalePlate Size17mmTip ShapePinched TipYear1965More 12AU7 type tubes12AU7, ECC82SiemensBranded ATES12AU7, K61SiemensBranded Telefunken12AU7, GF1SiemensBranded ArtisanECC82, 12AU7, K61Branded Mullard12AU7Branded LansdaleECC82, 12AU7Branded Pinnacle12AU7Branded MazdaECC82, 12AU7FivreBranded Geloso12AU7Branded Tungsram12AU7Branded AwvMore K61 type tubes12AU7, K61SiemensBranded TelefunkenECC82, 12AU7, K61Branded MullardECC82, B329, K61MullardBranded MarconiECC82, B329, K61MullardBranded MarconiECC82, K61Branded MullardECC82, 12AU7, K61MullardBranded Heath12AU7, K61Branded BrimarMore tubes manufactured by MullardEL34, XF2MullardBranded SylvaniaCV491MullardEL37MullardBranded AmperexEL34, XF2MullardBranded Philips6CA7, EL34, XF2MullardBranded AmperexECC33, FX1MullardBranded ValvoECC82, I61MullardBranded ValvoEL34, XF2MullardBranded PhilipsEL34, 6CA7, XF2MullardBranded SiemensGZ34, 5AR4, F32MullardBranded SylvaniaMore tubes branded TungsramECC83, 12AX7, MC0SiemensBranded TungsramECC40Branded TungsramECC82Branded TungsramEL34, XF4MullardBranded TungsramEL34, XF2MullardBranded Tungsram12AU7Branded TungsramECC83Branded TungsramEL34, XF2MullardBranded Tungsram6SN7GTBranded TungsramECC83Branded Tungsram
