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(!) (#1 5881 Pair) 6L6WGB=5881 Sylvania black base NOS 1970's (74ma and 74.5ma)

$ 98.88
1 Platinum Pair) 6L6WGB=5881 Sylvania black base NOS 1970's same build
1 tube) 74ma Gm=6100 (Sylvania)
1 tube) 74.5ma Gm=6200 (branded JAN-6L6WGB=5881 Sylvania 1978 (extra grid heatsink above top mica)

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