(!!) 12AU7A RCA CANADA NOS “”D”” getter halo 1950”s tip is chipped (10.0/10.4ma)

1 low noise tube) 12AU7A RCA CANADA NOS “”D”” getter halo 1950”s tip is chipped

10.0ma Gm=2200

10.4ma Gm=2300

Good Ma range 8-10ma

Good Gm range 1800-2200