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(!!!) (Mullard Pair) 6BM8=ECL82 RTC by Mullard UK NOS 1975 (2.2/34ma and 2.0/38ma)
(!!!) (Mullard Pair) ECL82=6BM8 RTC England by Mullard UK NOS 1974-1977 (2.1/30ma and 2.1/29ma) 1-3% matched
(!!!) (nice single) USN-6922=E88CC Amperex USA gold pins used/like new 1962 (16/12.8ma)
(!!!) (PAIR 1940's) 6AC7 RCA used/good 1941-1942 (7.8/7.5ma)
(!!!) (Pair) 6AC7 RCA used/test like new 1948 - 1954 (11.6/12.5ma)
(!!!) (PAIR) 6AN8A RCA NOS 1972-1973 (14.4/12.4ma and 15.2/11.8ma)
(!!!) (PAIR) 6AS6 Mullard BVA UK NOS 1974 (4.5ma and 4.4ma) (tubedrve)
(!!!) (Pair) 6FQ7 RCA clear top NOS "O" getter halo 1970's (6.6/6.0ma and 6.0/6.4ma) (close Gm)
(!!!) (Pair) CX-301A Cunningham Balloon used/good 1930-1935 (2.2ma and 2.5ma)
(!!!) (Pair) CX-326 Cunningham balloon used/good 1930 era (4.2ma and 4.5ma) same Gm
(!!!) (PAIR) EF89=6DA6 Telefunken Germany <> bottom NOS 1966 (7.2ma and 7.2ma)
(!!!) (Pair) JAN-CRC-6AC7=VT-112 RCA 1941-1946 used/good (8.4/9.4ma)
(!!!) (PAIR) UX-201-A Radiotron Balloon used/good brass pins 1930's (2.3ma and Gm=700 x 2 tubes)
(!!!) (Pair) UX-226 RCA Radiotron balloon used/good 1930 era (3.9ma and 3.6ma)
(!!!) (READ REVIEW) 6922 US Navy Amperex and Amperex branded RCA USA NOS 1963-1964 (18.8/17.6ma and 18.5/20.2ma) (close Gm matching) (Audio Research, Nova, CAT, CJ, Lab 12)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.5ma and 1.5ma)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)
(!!!) (Recommended Pair 1963) JG-5751 GE double mica gray plates NOS 1963 (2.0/1.9ma and 1.9/1.8ma) (same Gm)
(!!!) (Recommended Pair) 12AT7 GE gray plate NOS 1961 (12.0/13.4ma and 13.2/12.5ma)
(!!!) (Recommended Pair) 12AT7 RCA gray plates NOS 1971 (7.2/8.0ma and 7.6/6.6ma) (close Gm)