GE 12AX7 NOS Tube - 1953 - Long Plates - U Dimpled Foil Getter - Copper Grid Posts - Tested Strong & Quiet

One 1953 GE 12AX7 / ECC83 with early long-plate construction, strong measured performance, and verified quiet operation.

You will receive the exact tube shown in the photographs.

This is an early GE version with features that distinguish it from later 12AX7 production:

• 17 mm long gray plates
• U-shaped dimpled foil-strip getter
• Copper grid posts
• Visible Electronic Tube marking
• Date code: 3 09 — 1953
• NOS
• Supplied in a clean new white tube box

Tested — Strong & Quiet

Measured results:

• Gm: 2,000 / 1,675 µmhos
• Plate current: 1.5 / 1.2 mA
• Recorded test reference: 1,000 µmhos minimum / 1,500 µmhos average-new
• No shorts or leakage detected
• Verified low noise
• Verified non-microphonic

Both triode sections measure above the recorded average-new Gm reference used for this test.

Why This Tube Is Worth a Closer Look

If you are looking for an early American 12AX7 rather than an ordinary later-production example, this one gives you something increasingly difficult to get in the same purchase: desirable early construction plus documented electrical performance.

There is no guessing about the tube being offered. The photographs show the actual tube, and its strength, shorts/leakage, noise and microphonics have already been checked.

A strong choice for a vintage amplifier, preamplifier, phono stage, guitar amplifier, or other equipment designed for the 12AX7 / ECC83 where a quality vintage U.S.-made tube is wanted.

The surviving markings and early internal construction give it plenty of vintage character, while the test results provide the confidence that matters when the tube is put into service.

Only one of this exact tube is available.

It will be carefully packed for shipment in a new protective white tube box.

VTubeAudio — vintage tubes individually identified, tested and documented so you know what you are buying.

SKU: C3-2 / 88310690