KT88M.O.Branded GecBaseSilver MetalBrand ExtendedG.E.C.CountryEnglandGlass ColorClear GlassManufacturer ExtendedM.O. Valve Co. Lmt.MicaTriple MicaPermanentid1c06alpiv2Pin ColorSilver PinsPlate ColorBlackMore KT88 type tubesKT88Branded Gold AeroKT88M.O.Branded Iec MullardKT88CetronBranded National ElectronicsKT88M.O.Branded GenalexKT88M-O Valve Co. LtdBranded BrimarKT88M-O Valve Co. LtdBranded GenalexGold MonarchKT88M.O.Branded GenalexKT88GenalexBranded EdicronKT88M-OBranded TronixKT88Branded National ElectronicMore tubes manufactured by M.O.KT88M.O.Branded Iec MullardCV1988M.O.KT88M.O.Branded GenalexKT88M.O.Branded GenalexMore tubes branded GecKT66Branded GecCV2901Branded GecU52Branded GecECC83Branded GecECC82, B329Branded GecTT22Branded GecB65M-O Valve Co. LtdBranded GecB329SiemensBranded GecN709Branded Gec
