KT66, TEONEX, CLEAR GLASS,

CV1075, COSSOR, HIGHBURY PRE SEPT 1945 MANUFACTURE, RED PRINT, CLEAR GLASS, FAT BOY KT66, VT75

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 OUTPUT BEAM TETRODE SHORT FORM BOXED TESTED

KT66, OSRAM BROWN BASE,GREY GLASS , LARGE BLUE DECAL, HAMMERSMITH PRODUCTION, JUNE 1955,