Note – there are no markings on the glass, the markings have faded or rubbed-off. Sylvania 6SN7GT. Matched Pair +1.
Item Tag: 6SN7
SYLVANIA 6SN7 GTB TUBE 1968 CHROME TOP HALO BLACK V PLATES MATCHED SET
Rare late-1968 Sylvania production featuring the highly sought-after PERFECT MATCHED SET. BLACK V PLATES. Matched Codes: 6844 AKL. EXCL USIVE HIGH FIDELTY TUBE. ✅ Strong Matching Pair. Production Year: Emporium, PA – 1968.
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Pair RCA 6SN7GTB short glass Black Plate Tubes Balanced STRONG 6SN7
PairRCA 6SN7GTB. Black Plate Balanced Tubes. These tubes test 85/85 and 90/90where a new tube tests 85/85.
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Matched Pair 1958 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Matched Pair 1958 GE Side Getter 6SN7GTB Tubes. These tubes test 85/85 where a new tube tests 85/85.
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Pair 1957 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 90/90 and 85/85 where a new tube tests 85/85.
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Matched Pair +1 RCA 6SN7GTB Staggered Black Plate Tubes Balanced STRONG 3pc 6SN7
RCA 6SN7GTB. Matched Pair +1.
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2 Vintage 1958 Sylvania 6SN7GTB Tubes Pair Chrome Dome Black Plates Preamp Amp 2
You are buying the 2 tubes as titled and pictured. This particular pair tests strong and are closely matched. Made by Sylvania, labeled for Baldwin. Both date codes match. The tubes’ test results are displayed in the photos (New 6SN7 Spec 100% = 2,600 Gm).
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SYLVANIA 6SN7 GTB 1977 TUBE 2 HOLE TOUGH DOG FOIL GETTER MATCHED SET NIB
Matched Codes: KC. LEGENDARY TOUGH DOGS. I mark every tube in order to avoid tube rolling! 2 HOLE BOXED T PLATES. PERFECT MATCHING SET. EXCL USIVE HIGH FIDELTY TUBE. Tall Black Base. BEST TUBES ON THE MARKET. NO LEAKS. NO SHORTS.
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SYLVANIA 6SN7 GTB TUBE 1959 CHROME TOPPED HALO BLACK PLATES MATCHING SET
✔ Custom 6SN7 platforms. 🔥 Genuine U.S.A. Sylvania manufacture (EIA 312). 🔥 Date coded 312-939 (39th week of 1959). MATCHED SET. BLACK V PLATES. 🔥 Matched pair. EXCL USIVE HIGH FIDELTY TUBE. Production Year: Emporium, PA – September 1959.
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SYLVANIA 6SN7 GTB TUBE 1959 CHROME TOPPED HALO BLACK PLATES MATCHING SET
✔ Custom 6SN7 platforms. 🔥 Genuine U.S.A. Sylvania manufacture (EIA 312). 🔥 Date coded 312-939 (39th week of 1959). MATCHED SET. BLACK V PLATES. 🔥 Matched pair. EXCL USIVE HIGH FIDELTY TUBE. Production Year: Emporium, PA – September 1959.