Really nice RCA 5751 . No Original Box. Print is pretty worn. Clean straight pins. No gas or shorts. Triple Mica, Extra support rods, Black Plates, Halo Getter. These are considered among the best. These will sub for a 12AX7 but with less gain. These were made for the militarily and are very ruggedized. Tested properly on our calibrated TV-7D/U where minimum is 32. Triode 1 is 40 and Triode 2 is 42 . Very well balanced Buy with confidence, we are very proud of our 100% positive feedback. Save us as a seller. We stock over 3,000,000 tubes. If you need anything message us and we will send you and offer. Thanks for looking!
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