(!!) (Best Pair) 10Y=VT-25 Sylvania NOS 1940's same build (29.4ma and 29.0ma)
$ 248.88
1 pair) 10Y=VT-25 Sylvania NOS 1940's in white boxes
- same internal build
1 tube) 29.4ma Gm=2200 (VT-25 Sylvania)
1 tube) 29.0ma Gm=2200 (JAN-CHS-10Y=VT-25 SYLVANIA) a few scratches over printing area
Good Ma range 20-30ma
Good Gm = 1700-2000
Vplate=300V
Vgrid=-15V
See more: vacuum tube
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 (Best Pair) 10Y=VT-25 Sylvania NOS 1940's same build (29.4ma and 29.0ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/5_87d79b85-0eaf-4b59-9622-7b5f389311d6.jpg?v=1780857419){kind=link}
 (Best Pair) 10Y=VT-25 Sylvania NOS 1940's same build (29.4ma and 29.0ma) "Pin It")