(!!) PT-210 GE Pliotron Balloon engraved base NOS 1920's (29ma Gm=2000) (rare)
$ 378.88
PT-210 GE Pliotron Balloon engraved base NOS 1920's thoriated tungsten filament like 10Y
tube in very good condition
29ma
Gm=2000
NOT A PAIR
STRONG SINGLE
Good curent range 20-30ma
Good Gm = 1600-1800
Vplate=300V
Vgrid=-15V
See more: vacuum tube
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 PT-210 GE Pliotron Balloon engraved base NOS 1920's (29ma Gm=2000) (rare)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_910d4b73-2d36-4b0c-b8df-cbe59a3b4b23.jpg?v=1754851071){kind=link}
 PT-210 GE Pliotron Balloon engraved base NOS 1920's (29ma Gm=2000) (rare) "Pin It")