(!!) (BEST PAIR) 6BQ6GTB=6CU6 Sylvania JAN NOS 1960's (56ma and 56ma)
$ 9.99
1 pair) JAN-CHS-6BQ6GTB=6CU6 Sylvania NOS 1960's
1 tube) 56ma Gm=5500
1 tube) 56ma Gm=5200
Good Good = 50ma
Good Gm = 5200+
See more: vacuum tube
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 (BEST PAIR) 6BQ6GTB=6CU6 Sylvania JAN NOS 1960's (56ma and 56ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/3_6440b70b-b8da-4ac4-8c1b-198043d13076.jpg?v=1697736269){kind=link}
 (BEST PAIR) 6BQ6GTB=6CU6 Sylvania JAN NOS 1960's (56ma and 56ma) "Pin It")