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(!!) (Pair #4) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass and plate (5.4ma and 5.4ma)
(!!) (Pair #4) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass and plate (5.4ma and 5.4ma)
$ 24.99
1 pair) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's original boxes, 4 metal prongs on top mica, same internals
1 tube) 5.4ma Gm=1400
1 tube) 5.4ma Gm=1500 slightly tilted glass - see photo
(Vfilament = 2.5 volts)
Amplitrex Test:
Vplate=250V
Vgrid=-13.5V
Iplate good range = 4.5-5.5ma
Gm=1400
- Inspire LP-27A
See more: vacuum tube
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 (Pair #4) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass and plate (5.4ma and 5.4ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/4_8352a56d-df44-4f61-8708-17ea52e2b5a1.jpg?v=1778620577){kind=link}
 (Pair #4) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass and plate (5.4ma and 5.4ma) "Pin It")