The tubes listed below (unless indicated as NOS) are used and have been twice tested (that is tested the second time just before shipping) for mutual conductance, gas, leakage and shorts on my Hickok 539C tube tester. All have tested as good functional tubes well above the minimum acceptable level and are individually boxed.

Those of you new to old radios and their tubes, please take a moment to read my notes (right column below) and other info I have posted on tubes on tube numbering and style types, be sure and look at the images I've provided by clicking on the (brown) links.

Keep in mind that quantities are limited, some to only 1 or 2.

**Matched pairs The industry standard for matched pairs is 25%. I match a bit closer that that, typically my matched pairs will be within 10% but no more than 15% of each other. They will be matched for mutual conductance, brand and appearance, the fee is $15.00 per pair over and above the individual price.

NOTE: Prices do not include shipping and
insurance. If insurance is desired, it must
be requested and purchased separately.
If shipped un-insured the buyer assumes
risk of loss or damage. Prices may change
and  inventory  depleted  without  notice.

The list below are 1920's/30's tubes. Both "ST" and "Antique Globe" styles are included. If available in the "Globe" style, they will be listed with their original "UX" or "UY" prefix following the 2 digit listing (some globe styles do not have the prefix).

Tube testing information

Adaptors to use UX-199 tubes in place of WD-11's 

O1A & 201A, WD-11,  99's
^click on the above for images of these tube types & styles

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** indicates new old stock (NOS)
Bold text = "ST" style glass

NOTE: Prices do not include shipping and
insurance. If insurance is desired, it must
be requested and purchased separately.
If shipped un-insured the buyer assumes
risk of loss or damage. Prices may change
and  inventory  depleted  without  notice.

PLEASE > READ < BEFORE ORDERING

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NOTE: Prices do not include shipping and
insurance. If insurance is desired, it must
be requested and purchased separately.
If shipped un-insured the buyer assumes
risk of loss or damage. Prices may change
and  inventory  depleted  without  notice.

The differences in the "ST" & "Antique Globe" style tubes are strictly cosmetic. The "Globe" styles are the early style & less common. They command a higher price because they look more authentic when peering into the insides of the 1920's radios.

Vacuum tube numbers were not standardized until the early 30's. At that time all the prefixes such as "UX". "UY" and other pre-fixes were dropped. Examples:

No. UX-201A became a "01A", a UY-227 became a "27" and so on.

An "A" suffix on tube number indicated an improvement over the previous version.

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O1A & 201A, WD-11,  99's
^click on the above for images of these tube types & styles

CX base = Cunningham's designation for the UX base
UV base = 4 stubby pins
UX base = 4 long pins
UY base = 5 long pins

UV/UX-200 (00)
gas filled triode detector
filament: 5 volts 1A tungsten

UV/UX-200A (00A)
gas filled triode detector
filament: 5 volts .25A throated

UV/UX-201 (01)
triode AF/RF amplifier
filament: 5 volts 1A tungsten

UV/UX-201A (01A)
triode AF/RF amplifier
filament: 5 volts .25A thoriated

UV/UX-199 (99)
triode AF/RF amplifier
filament: 3 volts .25A thoriated

WD-11
triode AF/RF amplifier
filament: 1.1 volts .25A coated filament, special base

WD-12
electrically the same as the WD-11 except for the "UV" base

00A, same as UX200A
01A, same as UX-201A
301A, etc, same as 201A
C-11, same as WD-11
C-12, or X12 same as
         WD-12
12A, same as UX-112A
71A, same as UX-171A
80, same as UX-280

UV 201A "rainbow" getter

Brightson Blue tube