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(!!) (Best Pair #1) JHS-6AU6WB Sylvania NOS 1963-1968 (7.2ma and 7.2ma)
(!!) (Best Pair #2) JHS-6AU6WB Sylvania NOS 1964-1968 (6.4ma and 6.6ma)
(!!) (Best Pair) JAN-6AU6WB Sylvania NOS 1968 (6.0ma and 6.0ma) 1% matched
(!!) (Best Pair) JHS-6AU6WB Sylvania NOS 1967-1968 (6.3ma and 6.6ma)
(!) (2nd Best Pair) JHS-6AU6WB Sylvania NOS 1963-1964 (6.0ma and 6.5ma)
6AU6WB Sylvania JAN NOS 1969 (8.1ma)
6AU6WB Sylvania NOS 1968 (6.4ma)
6AU6WB=6136 Sylvania branded Westinghouse NOS 1974 (7.2ma)