Sylvania JAN CRC-6SN7W metal base military tubes were made for the Navy. They have Navy anchors and made during WWII. One of the tubes is an early A civilian version also WWII vintage. These tubes are one of the most famous 6SN7 tubes made because of their very realistic, 3-dimensional sound.Matched pairs shipped in white boxes. All have black T-shaped plates, copper support posts and test near NOS or 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 realistic, dramatic, holographic and powerful sound. Extended highs and tight bass. Most forum posts list these same qualities. “The Syl 6SN7W tall bottles - both metal and black base - throw a huge soundscape with lots of heft and slam.” –Len Tubes were tested on my Hickok 600A gm tester. Measurements are in micromhos. Average new 6SN7 tubes test around 2600 gm. I cannot guarantee that these tubes will test the same on your tester as on mine. My tubes have a money back guarantee. If a tube arrives DOA, I will pay return shipping for a refund. Buyer pays return shipping for all other reasons. Please order by pair number. Questions are welcome. SOLD Pair #1: $500.00. Tightly match pair with matching plates. Test near NOS and very strong. 2500/2500 and 2450/2450. Both tubes have tight bases, black T plates, and copper support rods. One is an early A civilian version of the tube. The other is a WWII JAN CRC-6SN7W military tube. Both tubes have the identical internal structure and similar sonics. Come in white boxes. They have clear lettering with full chrome dome getting. Codes: L4, A5. Pair #2: $425.00. Tightly matched pair, one tube with matching plates. 2200/2200 and 2200/2300. Both are JAN CRC-6SN7W WWII military tubes with tight bases, black T plates, and copper support rods. They have very clear lettering with full chrome dome getting. Come in white boxes. Matching codes: A5, A5. PRICE INCLUDES FREE PRIORITY SHIPPING AND PAYPAL FEES IN THE CONTINENTAL US. Canadian customers, please email for shipping prices.
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