Description
(!!!) (Best Overall Pair) USN-12AT7WB GE gray plates “U” getter triple mica 1959 (10.8/11.6ma and 10.2/12ma)
1 low noise tube) USN-12AT7WB GE gray plates “U” getter triple mica 1959
1 tube) 10.8/11.6ma Gm=6200/6300
1 tube) 10.2/12ma Gm=6100/6300
USN=US Navy
Good mA range 7-10ma