(!!!!) (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)
By Tube World
$ 38.88
1 pair) 30 Sylvania engraved base NOS 1930's original boxes
1 tube) 3.2ma Gm=900
1 tube) 3.4ma Gm=900
1 tube) 3.2ma Gm=900
1 tube) 3.4ma Gm=900
See more: vacuum tube
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 (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_04dcece5-863d-4e84-8132-1221cb254a3a.jpg?v=1696708585){kind=link}
 (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm) "Pin It")