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6L7 RCA metal can used/like new 1940's (40/16)
(!!!) (Recommended Pair) 6BK7B Tungsol gray plates NOS "O" getter 1960's (10/11ma and 10.6/13.2ma)
(!!!!) (Best Value Pair) 6U8A GE NOS 1965-1968 (12/7ma and 12/7.4ma)
12Q7GT Philco used/good (35/20)
12Q7GT Dumont used/good (34/20)
12Q7GT RCA used/strong (42/20)
6EM7 RCA NOS 1965 (4.2ma/31ma)
6EM7 GE Amperex NOS 1970's (2.4ma/34ma)
6EM7 GE Canada NOS 1960's (2.9ma/30ma)
6EM7 Sylvania Silvertone NOS 1960's (1.5ma/55ma)
6N7 Sylvania NOS 1940's (2.3/2.3ma)
(!!!) (Recommended Pair) 6EM7=6EA7 Sylvania coin-base NOS 1970's (1.5ma/73ma and 1.8ma/65ma)
(READ REVIEW) 6J5 RCA Hewlett Packard used/good 1960 (7.5ma)
(!!!!) (Good Single 1950) 12AU7 Sylvania black plates "D" getter NOS 1950 (11/12.8ma)
JHS-12AU7 Sylvania "black plates" with "D" getter used/mis-matched sections (7.6/12ma)
(!!!) (BEST PAIR) 7308 Sylvania JAN NOS 1976 in white boxes (14.4/19.4ma and 18.0/15.6ma)
(!!) 12AU7WA=6189 Sylvania NOS 1960's (8.8/9.0ma)
(!!!) (Best Single) 12AU7WA=6189 Sylvania NOS 1960's (10/10ma) 1-2% section balance
12HG7=12GN7A RCA NOS (30ma)
(READ REVIEW) JAN-7308 Amperex USA gold pins NOS 1977 (15.8/14.5ma and 15.2/15.4ma)
