(!!!!) (Best Value Pair) 6L6WGB=5881 Sylvania NOS and like new same build 1970's (74ma and 75ma)
(!!!!) (Good Value Pair) 6L6WGB=5881 Sylvania and Philips JAN black base 1979-1986 (72ma and 73.4ma)
(!!!!) (Recommended Pair) 6L6WGB=5881 Sylvania NOS same build 1980 era (81ma and 84ma) (same Gm)
(!!!) (Good Value Pair) 6L6WGB=5881 Sylvania brown base NOS and used/like new (59ma and 61ma)
(!!!) (Recommended Pair) 12AY7 Zenith Sylvania NOS 1960 (2.3/2.8ma and 2.5/2.8ma)
(!!!) (Recommended Pair) 5881 Sylvania black base NOS 1970's same build (65ma and 67ma)
(!!!) (Recommended Pair) 6L6WGB=5881 Sylvania black base NOS 1980-1987 same build (86ma and 91ma)
(!) (Recommended Single) 5881=6L6WGB GE NOS 1960's (72.5ma)
5881 International Japan black plate NOS 1960's (70ma)
