(!!!!) (Best Pair) 5881 Sylvania black base NOS 1970's - 1980 (85ma and 85ma)
$ 139.99
1 Pair) 5881 Sylvania black base NOS 1970's - 1980 same build
1 tube) 85ma Gm=6600 branded RCA 1980
1 tube) 85ma Gm=6300
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