(!!!) (BEST PAIR) JG-6189=12AU7WA GE double mica NOS 1963-1964 (10.2/12ma and 10.2/11ma)
$ 69.99
1 low noise pair) JG-6189=12AU7WA GE double mica "O" getter halo NOS 1963-1964 mil-grade in white boxes
10.2/12ma Gm=2200/2400 (red printing) 1963-1964
10.2/11ma Gm=2200/2300 (green printing) 1964
JG=mil-grade
12AU7 subsititute
5814A=12AU7 GE is also recommended
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