(PAIR) 12B4A Sylvania NOS 1960's - 1970's (33ma and 36.5ma)
$ 19.99
1 Pair) 12B4A Sylvania NOS
1 tube) 33.0ma Gm=6600 Sylvania
1 tube) 36.5ma Gm=6850 Sylvania branded Philips
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 12B4A Sylvania NOS 1960's - 1970's (33ma and 36.5ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/6_fd65c03b-b548-47fd-89fa-753587c855b6.jpg?v=1790918053){kind=link}
 12B4A Sylvania NOS 1960's - 1970's (33ma and 36.5ma) "Pin It")