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(!!!!!) (INFORMATION) 6N1 or 6N1P (Best Sounding Substitutes = 6BK7B, 6BQ7A, 6BZ7)

$ 0.00
(!!!!) (Best GE Single) 6BK7B GE gray plates NOS

(!!!!) (Best GE Single) 6BK7B GE gray plates NOS "U" getter 1974 (8.0/8.8ma)

$ 24.99
(!!!!) (Single) 6BK7B GE gray plates NOS

(!!!!) (Single) 6BK7B GE gray plates NOS "U" getter 1963 (6.2/5.4ma)

$ 19.99
(!!!!) (Single) 6BK7B RCA NOS

(!!!!) (Single) 6BK7B RCA NOS "U" getter 1950's (7.5/8.5ma)

$ 24.99
(!!!!) (Single) 6BK7B RCA NOS 1960's faded printing (7.4/7.4ma)

(!!!!) (Single) 6BK7B RCA NOS 1960's faded printing (7.4/7.4ma)

$ 19.99

(!!!!) (Single) 6BK7B RCA NOS 1962 (7.4/8.3ma)

$ 21.99
(!!!!) (Single) 6BK7B Tungsol branded RCA

(!!!!) (Single) 6BK7B Tungsol branded RCA "U" getter 1957 (10/14ma)

$ 29.99
(!!!) (Recommended Pair) 6BK7B Tungsol black plates NOS

(!!!) (Recommended Pair) 6BK7B Tungsol black plates NOS "O" getter 1960's (8.6/7.5ma and 8.2/9.4ma)

$ 49.99
(!!!) (Recommended Single) 6BK7B Tungsol gray plates NOS 1960's (8.0/9.8ma) (great sub for 6N1P)

(!!!) (Recommended Single) 6BK7B Tungsol gray plates NOS 1960's (8.0/9.8ma) (great sub for 6N1P)

$ 19.99
(!) (BEST PAIR) 5BZ7=5BQ7A GE gray plates NOS 1971 (10.8/10.6ma and 10/9.3ma)

(!) (BEST PAIR) 5BZ7=5BQ7A GE gray plates NOS 1971 (10.8/10.6ma and 10/9.3ma)

$ 11.99
(!) (PAIR) 5BQ7A Dumont by GE gray plates NOS 1973

(!) (PAIR) 5BQ7A Dumont by GE gray plates NOS 1973 "U" and "O" getter (7.0/7.4ma and 7.0/6.6ma)

$ 11.99
(!) (PAIR) 5BQ7A Raytheon by Sylvania gray plates NOS 1970 era (10.4/9.4ma and 9.4/9.6ma)

(!) (PAIR) 5BQ7A Raytheon by Sylvania gray plates NOS 1970 era (10.4/9.4ma and 9.4/9.6ma)

$ 12.99
(READ REVIEW - GOOD HUMOR) 5BQ7A RCA branded Raytheon black plates

(READ REVIEW - GOOD HUMOR) 5BQ7A RCA branded Raytheon black plates "D" getter faded printing 1950's (14.0/13.6ma)

$ 0.00
(READ REVIEW) 5BQ7A GE gray plates NOS large

(READ REVIEW) 5BQ7A GE gray plates NOS large "U" getter halo 1961 -1964

$ 0.00
(READ REVIEW) 5BQ7A RCA black plates NOS 1964 (11.6/14.4ma)

(READ REVIEW) 5BQ7A RCA black plates NOS 1964 (11.6/14.4ma)

$ 0.00
5BQ7A Tungsol black plates NOS 1960 era (13.2/12.2ma)

5BQ7A Tungsol black plates NOS 1960 era (13.2/12.2ma)

$ 7.99
5BZ7=5BQ7A GE gray plates NOS 1971 (13/16.2ma)

5BZ7=5BQ7A GE gray plates NOS 1971 (13/16.2ma)

$ 5.99
6BK7B Philco by Sylvania NOS 1960 (13.2ma/15.2ma)

6BK7B Philco by Sylvania NOS 1960 (13.2ma/15.2ma)

$ 14.99
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