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(!!!) (Recommended Pair) 6L6WGB=5881 Sylvania black base NOS 1980-1987 same build (86ma and 91ma)
(!!!) (Recommended Pair) 6L6WGB=5881 Sylvania black base NOS 1980-1987 same build (86ma and 91ma)
By Tube World
$ 139.99
1 matched pair) 6L6WGB=5881 Sylvania black base NOS 1980-1987 same build
1 tube) 86ma Gm=6600 (Sylvania branded Philips) extra grid heatsink above top mica
1 tube) 91ma Gm=6800 (Sylvania branded RCA 1979-1980 era)
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 (Recommended Pair) 6L6WGB=5881 Sylvania black base NOS 1980-1987 same build (86ma and 91ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_b911a0a5-4358-4c39-a664-b45863a3aa05.jpg?v=1685485891){kind=link}
 (Recommended Pair) 6L6WGB=5881 Sylvania black base NOS 1980-1987 same build (86ma and 91ma) "Pin It")