(!!) (Recommended Pair) 0B3 Sylvania NOS 1956 same build
By Tube World
$ 11.99
1 pair) 0B3 Sylvania NOS 1956 same build
1) Sylvania
1) Sylvania rebranded Raytheon
ARGON GAS
(OB3=voltage regulator; 90V @ 5-40ma) (argon gas)
- Decware Torii MKIV
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 (Recommended Pair) 0B3 Sylvania NOS 1956 same build&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_03a2aba5-af41-42fc-867a-e6ca176968c5.jpg?v=1574467774){kind=link}
 (Recommended Pair) 0B3 Sylvania NOS 1956 same build "Pin It")