Mullard Magic: For All Your Vintage Valve and Radio Needs!
6SL7GT, BRIMAR, FAT BLACK BASE, ORANGE PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, 6SL7
6SL7GT, BRIMAR, FAT BLACK BASE, SILVER PRINT, CV569, CV1985, ECC35, VT-229, FOOTSCRAY, APRIL 1958 PRODUCTION 6SL7
6SL7GT, GE, WHITE PRINT, CHROME ANODE, SCHENECTADY NY SEPTEMBER 1954 PRODUCTION 6SL7
6SL7GT, GE, WHITE PRINT, GREY ANODE, KENTUCKY, JANUARY 1942 PRODUCTION, PRODUCTION 6SL7
6SL7GT, MATCHED PAIR, SYLVANIA, VT-229, MILITARY, WHITE BASE PRINT, SAME FACTORY CODE, FEBRUARY 1944 PRODUCTION, 6SL7