(!) 47 Sylvania branded Philco used/very good 1940's (28.6ma Gm=2650)
$ 20.99
47 Sylvania branded Philco used/very good 1940's in white box
28.6ma
Gm=2650
NOS Ma range 26-31ma
NOS Gm range 2300-2500
(2.5 watts)
(2.5V filament)
See more: vacuum tube
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 47 Sylvania branded Philco used/very good 1940's (28.6ma Gm=2650)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_e0b53c23-5e11-419c-9a8c-8785c139cee9.jpg?v=1700331625){kind=link}
 47 Sylvania branded Philco used/very good 1940's (28.6ma Gm=2650) "Pin It")