24A Sylvania ST-shape engraved base used/very good 1930”s (44/25) (2.9ma Gm=800)

1) 24A Sylvania ST-shape engraved base used/very good 1930”s

2.9ma

Gm=800

Good used Ma = 2.5 – 3.0ma

Good used Gm = 700-800

TV7D/U=44/25