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deForest Audion Tubes

rare and collector vacuum tubes for sale
 

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Spherical Audion (1)

No markings, double filaments, both good, vacuum good.

 1 available

$775.00  or MAKE OFFER FREE USA SHIPPING


 

Spherical Audion (2)

Has original label: ULTRAUIDON, 6 volt, Hudson Filament, pat Feb. 18th 1908

Display only, vacuum appears to be intact, one filament visually appears to be intact but measures open.

 1 available

$675.00  or MAKE OFFER FREE USA SHIPPING


 

Spherical Audion (3)

Has original label: ULTRAUDION, 6 volt, Hudson Filament, pat Feb. 18th 1908

Display only, vacuum appears to be intact, filament open.

1 available

$575.00  or MAKE OFFER FREE USA SHIPPING


 

Spherical Audion (4)

This is the rarest of the Deforest Spherical audions that I have. It's unusual in that it has a molded cylindrical base.

Display only, vacuum appears to be intact, filament open.

1 available

$795.00 or MAKE OFFER FREE USA SHIPPING


 

Spherical Audion (5)

Has original double label: AUDION DETECTOR, pat Feb. 18th 1908.

Second label reads: "This bulb not licensed for commercial purposes"

Display only, vacuum appears to be intact, both filaments visually appear to be intact but measure open.

1 available


SOLD



Tubular Audion (2)

No markings that I can find. Double filament, one good.

 

1 available $155.00 MAKE OFFER



Tubular Audion (5)

 

No markings that I can find. Double filament, both open. Good display, no damage to glass or internal structure.

1 available $75.00 MAKE OFFER


 

deForest - Marconi "Moorhead" style
(brass "UV" base) dark amber glass
 

"VT243392  LICENSED FOR EXPERIMENTAL USE ONLY" etched in glass. deForest audion and Marconi logo engraved in base.

 Cosmetically excellent, open filament.

1 available $95.00 MAKE OFFER


Type 20, scarce early detector. (not the same as UX-120)
UV style Nickel Base

1 available, tested at 4.3 (filament voltage) with 3 volts bias on my '539C and showed very good emission, no leakage or shorts

< click image for more detail.

 $135.00 ea. (2 available)


DL-5 UX Ceramic Base (Isolantite, long pins) excellent condition. Same as DV-5 but with long pins.

1 available Similar and tested like and a 01A (UV-201A) test very good, no leakage or shorts

< click image for more detail.

  $70.00 ea.


 

DV2 UV Isolantite Ceramic Base (short pins) with original can, excellent condition.

0 available Similar and tested like and a 01A (UV-201A) test very good, no leakage or shorts

< click image for more detail.

SOLD


DV3 (Bakelite "UV" Base) GOOD TUBE

 2 - available, test good and in good cosmetic condition.
The tube data sheet is my reproduction.
 
 $75.00  free shipping within the continental US

DV3 (Isolantite Ceramic "UV" Base) for display

1 available tube and can are both in excellent cosmetic condition for display. The tube data sheet is my reproduction.
 
SOLD

DV3 (Isolantite Ceramic "UV" Base) GOOD TUBE

 1 - available, test good and in good cosmetic condition.
The tube data sheet is my reproduction.
 
$125.00

DV5 (Isolantite  Ceramic "UV" Base)

same as DL5 but with "UV" base (short pins)
 1 - available in good cosmetic condition for display
(has good filament but test very weak
 
$25.00

DV5 Isolantite Ceramic Base (short pins) with original can, excellent condition.

2 available Similar and tested like and a 01A (UV-201A) test very good, no leakage or shorts. The tube data sheet is my reproduction.

< click image for more detail.

$125.00  




size Compare

DV3-A (UV Isolantite Ceramic Base)

a cute little seldom seen tube, similar to the UV-199
 
2 - available, for display only, all have open filaments,

SOLD

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