Nice pair with halo getters and same year code. Both tested as pictured. I will package these properly and ship them promptly.
Rare pie plate halo getter, tests nos strong. Test results pictured. I will package this properly and ship promptly.
2 x 5814A (12AU7) RCA Tubes. Tested on Enhanced Triplet E3444 Laboratory Tester. NIB = boxes may be tattered. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable.