1562 tube Globe Verstärker Kraftverstärker Telefunken Ke239 Valve Lampe 1920's
mono plate
black plate
hanging filament
black base
oldest production
RAINBOW GETTER
tested strong emission results = 98mA
Valve Lampe PHILIPS manufactured in HOLLAND
fully tested strong emission results = 80mA (good at 50mA) POWER VACUUM RECTIFIER employed in power Amplifier 1930's
box 90