/Fairchild Aviation. The box is stampedU.S.
(1) Tested 1943 WW2 RCA 6C5 VT-65 Tube K2E Signal Corps Fairchild Aviation b
(1) Tested 1943 RCA U.S. Navy 2X2/879 Tube WW2 Tube CRC 2X2 879 Date Code K3E
(1) Tested Very Strong RCA 6AV5GA Tube Date Code KV RCA 6AV5 GA Beam Power Tube
(1) Tested Very Strong RCA 117Z6GT Tube with Box Date Code 243 RCA 117Z6 GT
(1) Tested Very Strong RCA 6JT8 Tube Date Code DB 6JT8 Triode Pentode Tube
(1) Tested Very Strong RCA 50Y6GT Tube with Box Date Code 248 50Y6 GT Tube (b)
