All 6SL7WGT are Sylvania manufacture w/ green lettering, (1 is marked CBS/Hytron w/ red lettering.).
All have micanol brown composition bases.
No clinkers or loose parts in envelopes
(4) have identical plate construction.
(2) have full getters and plates are not visible, tubes match externally.
(6) all test well above rating on Hickok 539C and are EXCELLENT.
$32 - OBO w/ shipping

All have micanol brown composition bases.
No clinkers or loose parts in envelopes
(4) have identical plate construction.
(2) have full getters and plates are not visible, tubes match externally.
(6) all test well above rating on Hickok 539C and are EXCELLENT.
$32 - OBO w/ shipping


Last edited:
All test well above rating on Hickok 539C and are EXCELLENT.
$32 - OBO w/ shipping
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How well? How closely matched are the sides?
How well? How closely matched are the sides?
6SL7 rating -1050/1050
As follows:
#1 2300/2100
#2 2100/2100
#3 2100/2100
#4 1900/2100 (full getter)
#5 2000/2000
#6 1800/1700 (full getter)
These measurements were obtained after each had a good warm-up, about 90 seconds. The Hickok has a life test (reduced filament voltage) and when done the rating barely changed. #4 & #6 have scratches on the base, likely from socket clamps. The other (4) could be new but I do not know for sure. They are clean overall w/ excellent lettering but I am selling them as used.

Fundage has been initiated, waiting for acceptance.
Payment received!
😉
Hi Speaker, The tubes arrived, and I've listened to them. They are EXACTLY like you said, either in new or like new condition, when tested on my Hikock 600A. They also sound terrific, by the way. Thanx so much for going the extra mile and getting them to me! Sincerely, gfederys.
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