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(!!!) (Recommended Single) 6BZ7 RCA black plates "U" getter NOS 1957 (9.0/9.4ma)
(!) (BEST PAIR) 5BZ7=5BQ7A GE gray plates NOS 1971 (10.8/10.6ma and 10/9.3ma)
(!) (PAIR) 5BQ7A Dumont by GE gray plates NOS 1973 "U" and "O" getter (7.0/7.4ma and 7.0/6.6ma)
(!) (SINGLE) 6BZ7=6BQ7A GE GM Delco "U" getter NOS 1950's (11.6/10ma)
(READ REVIEW - GOOD HUMOR) 5BQ7A RCA branded Raytheon black plates "D" getter faded printing 1950's (14.0/13.6ma)
(READ REVIEW) 5BQ7A GE gray plates NOS large "U" getter halo 1961 -1964
(READ REVIEW) 5BQ7A RCA black plates NOS 1964 (11.6/14.4ma)
5BZ7=5BQ7A GE gray plates NOS 1971 (13/16.2ma)
6BK7B Philco by Sylvania NOS 1960 (13.2ma/15.2ma)
