For sale 2 tubes type 6SN7GT Raytheon made in USA same code 280 8-48
black internal coated glass
black plates
copper rods
square getter bottom
black base
yellow ink markings on base
same lot
same new old stock production
tested on tube tester TV7D/U
test results as follow
tube 1 = 94 & 90 (reference good at 50 & 50) ; reference 100% = 80 & 80
tube 2= 96 & 90 (reference good at 50 & 50) ; reference 100% = 80 & 80
top performance tubes