Mullard Magic: For All Your Vintage Valve and Radio Needs!
KT66 OUTPUT BEAM TETRODE SHORT FORM BOXED TESTED
CV1075, MIL SPEC, KT66, GEC, BROWN BASE,GREY GLASS,, DOVER PRODUCTION, MAY 1954, SCARCE DEVICE
CV1075, MILITARY SPEC, GEC, KT66, GREY GLASS, BROWN BASE, PH, HAMMERSMITH AUGUST 1958 MANUFACTURE
KT66, GEC, BROWN BASE, CLEAR GLASS,, HAMMERSMITH, JUNE 1978 PRODUCTION
KT66, OSRAM BROWN BASE,GREY GLASS , LARGE BLUE DECAL, HAMMERSMITH PRODUCTION, JUNE 1955,