(1) Tested RCA 8CM7 Tube with Box Date Code NI RCA Double Triode Tube

(1) Tested Rad-Tel 2CY5 Tube with Box Date Code 11-63 Rad Tel Tetrode Tube

(1) Tested RCA 9AU7 Tube with Box Date Code BG RCA 9AU7 Double Triode Tube

(1) Tested Strong RCA 9AU7 Tube with Box Date Code NF RCA 9AU7 Double Triode (b)

(1) Tested Sylvania 10GF7 Tube with Box Date Code ib Sylvania 10GF7 Dual Triode

(1) Tested RCA 12BR7 Tube with Box Date Code AV Twin Diode Triode Tube

(1) Tested RCA 5AN8 Tube with Box Date Code KQ Triode Pentode Tube

(1) Tested National Union 12BF6 Tube with Box Date Code 5326 Double Diode Triode