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1. Unie Sovtek 12Ax7wa Preamp Vacuum Tube, Single

2. 12AX7WA ECC83 7025 SOVTEK NOS BOXED VALVE TUBE

   12AX7WA SOVTEK. ECC83 / 7025. NEW AND BOXED.

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3. 12AX7WA JAN GE NOS BOXED VALVE TUBE

   12AX7WA GENERAL ELECTRIC. JAN MILITARY SPEC. 1975 DATE CODE.

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4. BRIMAR CV492 12AX7WA 1/2 BOX PLATE NOS BOXED 1964

   RARE STRONG BRIMAR CV492 ECC83 12AX7. DATED TO JULY 1964. NOS IN BOX. 1/2 BOX PLATE. TUBE 1 - Ia 1.3/1.3 gm 1.7/1.7.

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5. Philips ECG JAN 12AX7WA ECC83 12AX7 Valve Tube Used Tested Boxed (V65)

   JAN 12AX7WA ECC83 Valve Tube. Fully Tested on AVO VCM 163. Used, Supplied in Original Box.

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6. 12AX7WA SYLVANIA RING GETTER NOS VALVE TUBE (LB4)

   12AX7WA SYLVANIA. GREY PLATE RING GETTER.

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7. 12AX7WA Sylvania Valve Green Print NOS

   12AX7WA Sylvania Valve. Grey ladder anodes. Green Print. Made in the USA.

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8. NOS Pair PhilipsECG 7025 12AX7WA ECC83 Long Plates Ring Getter 12AX7

   NOS is subject to interpretation and there is no specific definition for it either. There are suggestions and opinions. Tube testers do not test for these problems in the manner in which you think, except to the extent that a tube tester with sensitive leakage detection will find far more “noisy” tubes than a tube tester with only “fair” leakage sensitivity, to the extent that the noise is due to this problem.

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9. Strong SOVTEK 7025 / 12AX7WA Tube

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