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(!!!!) (Recommended Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era (81ma and 84ma) (same Gm)
(!!!!) (Recommended Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era (81ma and 84ma) (same Gm)
$ 139.99
1 Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era
1 tube) 81ma Gm=6200 Sylvania branded GE faded printing - on left
1 tube) 84ma Gm=6200 Sylvania in white box
Matched on Amplitrex
Good Ma 55-70ma
Good Gm = 5500-6000
See more: vacuum tube
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 (Recommended Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era (81ma and 84ma) (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_2740af17-cd2b-4cc5-b9b4-200055932b77.jpg?v=1684994733){kind=link}
 (Recommended Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era (81ma and 84ma) (same Gm) "Pin It")