ylvania JAN CRC-6SN7W military tubes made for the Navy. All have Navy anchors except one (see descriptions). Matched pairs shipped in white boxes. All have black T-shaped plates, support posts and test NOS or slightly below. Some show signs of use (see photos). See listings for test results. The sonics of each pair were tested in my preamp and amp. These Sylvanias have a very full and rich sound. Deep bass. A wide/deep, 3 dimensional sound with lots of detail. Most forum posts list these same qualities.Tubes were tested on my Weston 981 gm tester. Measurements are in micromhos. The MINIMUM GOOD reading for a 6SN7 and VT-231 tube on my tester is 840. NOS 6SN7 and VT-231 tubes test 1600 and over. I cannot guarantee that these tubes will test the same on your tester as on mine. If a tube arrives DOA, I will pay return shipping for a refund. Price includes US PayPal fees and Priority USPS shipping within the continental US. Please order by pair number. Questions are welcome. Pair #1: $160.00. Perfect match. Test NOS and very strong. 1700/1750 and 1750/1700. Both JAN CRC-6SN7W military tubes with tight bases. Black T plates w/support rods. One with clear lettering and one missing the lettering. Full chrome dome getting. Codes: D5, G5. Pair #2: $160.00. Excellent match. Test NOS and strong. 1700/1600 and 1600/1700. Both JAN CRC-6SN7W military tubes with tight bases. Black T plates w/support rods. One has clear letter and one has faint lettering. Full chrome dome getting. Codes: E5, C5. Pair #3: $160.00. Test NOS, a strong matched pair. 1675/1750 and 1700/1600. Both JAN CRC-6SN7W military tubes with tight bases and black T plates w/support rods. One has very clear letter and one with clear lettering for its age (see photo). Full chrome dome getting. Codes: E5, C5. Pair #4: $140.00. A strong matched pair. 1450/1400 and 1400/1500. Both JAN CRC-6SN7W military tubes with tight bases and black T plates w/support rods. One has very clear letter and one with clear lettering for its age (see photo). Full chrome dome getting. Codes: H5, E5. (Email for photos.)
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