5 MATCHING NOS NIB SYLVANIA USN (US NAVY) CHS 5963 VACUUM TUBES (12AU7) FULL SLEEVE TV-7 TESTED NOS
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| Condition | |
| Payment methods |  |
Contact seller after sale to pay viaCertified check | |
| Ships from | Knoxville, TN, 37909 |
| Ships to | United States |
| Package dimensions | 6.0" × 6.0" × 6.0" (13.0 lbs.) |
| Shipping carrier | unspecified |
| Shipping cost | Specified after purchase |
| Original accessories | Box |
 Average | Research Pricing |
I HAVE A FULL SLEEVE (5) NOS SYLVANIA USN CHS 5963 (12AU7) VACUUM TUBES WITH MATCHING PRODUCTION / DATE CODES OF "AFR 6345" OCTOBER, 1963. THESE HAVE GRAY PLATES, GREEN PRINT AND THE TOP HALO GETTER. THESE TUBES WERE MANUFACTURED FOR THE UNITED STATES NAVY ("USN"). THE CHS STANDS FOR "CONTRACTOR HIGHGRADE SYLVANIA". AS THESE ARE A LONG LIFE MILITARY GRADE TUBE WITH AN EXCELLENT REPUTATION. RARELY SEEN WITH A FULL SLEEVE WITH MATCHING DATE / PRODUCTION CODES!
THESE HAVE ALL BEEN TESTED ON MY CALIBRATED TV-7 D/U TESTER WITH THE FOLLOWING RESULTS:
105 / 105
106 / 110
104 / 98
102 / 103
102 / 108
THIS IS WHERE 56 IS MINIMUM GOOD AND 86 IS MINIMUM NOS. SHIPPING IN THE CONTINENTAL USA WITH INSURANCE IS A FLAT $7.
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