KT88M.O.Branded G.E.C.BaseSilver MetalBrand ExtendedG.E.C.CountryEnglandGlass ColorClear GlassManufacturer ExtendedM.O. Valve Co. Lmt.MicaTriple MicaPermanentidnpf727xePin ColorSilver PinsPlate ColorBlackMore KT88 type tubesKT88M.O.Branded Iec MullardKT88Branded Gold AeroKT88CetronBranded National ElectronicsKT88M.O.Branded GenalexKT88M-O Valve Co. LtdBranded BrimarKT88M.O.Branded GenalexKT88M-O Valve Co. LtdBranded GenalexGold MonarchKT88GenalexBranded 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 G.E.C.KT66Branded G.E.C.TT21M-O Valve Co. LtdBranded G.E.C.B339, ECC83, I61Branded G.E.C.CV2901Branded G.E.C.ECC83Branded G.E.C.U52Branded G.E.C.ECC82, B329Branded G.E.C.CV1075Branded G.E.C.KT66Branded G.E.C.TT22Branded G.E.C.
