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(!!!!) (Best Single 1963) E88CC=6922 Amperex USA branded RCA NOS 1963 (18.8/17.6ma) (Highest mA and Gm)
(!!!) (nice single) USN-6922=E88CC Amperex USA gold pins used/like new 1962 (16/12.8ma)
(!!) (Best Value Single) E88CC=6922 Siemens Halske Germany "O" getter halo used/very good 1963 (11.5/12.6ma) (mic grade)
(READ REVIEW) E88CC=6922 Siemens Halske Germany NOS 1962 (16.0/15.5ma) (mic grade)