6SL7GT, RAYTHEON, ORANGE BASE PRINT, CHARCOAL ANODE, VT-229, NOVEMBER 1945 PRODUCTION, 6SL7
6SL7GT, RAYTHEON, ORANGE BASE PRINT, CHARCOAL ANODE, VT-229, NOVEMBER 1945 PRODUCTION, 6SL7
6SL7GT, RAYTHEON, ORANGE BASE PRINT, CHARCOAL ANODE, VT-229, NOVEMBER 1945 PRODUCTION, 6SL7