(PAIR) 8B10 Sylvania branded Raytheon NOS 1960's
$ 7.99
1 pair) 8B10 Sylvania branded Raytheon NOS 1960's
1 tube) 89, 87, 94, 93/60
1 tube) 90, 89, 94, 93/60
Tested on B&K tube tester
above 60 is good
See more: vacuum tube
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 8B10 Sylvania branded Raytheon NOS 1960's&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/6_59a8f9d0-d570-480d-8500-cdfac20481d3.jpg?v=1794686218){kind=link}
 8B10 Sylvania branded Raytheon NOS 1960's "Pin It")