match pair SYLVANIA 12SL7GT US TUBES 
12SL7 can replace VT-289
ORIGINAL BOX
D Getter
Smooth Plate
We use the TV-7 tester to thet them 
you can see the test value in my pictures
(12SL7 in TV-7 tester the MINI-mum value is 32/32)
thank you ,good luck .
《W3021》