List No. | Price. |
309 Type "S" Tantalum Filament Audion Bulb | $7.00 |
310 Type "S" Hudson Filament Audion Bulb | 10.00 |
297 Tantalum Filament Amplifier Bulbs | 15.00 |
298 Hudson Filament Amplifier Bulbs | 20.00 |
305 Type "S" Tungsten Special Single Filament Audion Bulb | 5.30 |