NOS RCA 7408 Power Beam Pentode Matched Pair

(1) Tested Sylvania 6CU5 with Box Date Code fh ABY Black Plate Power Pentode

(1) Tested RCA 6DS5 Tube with Box Date Code ND Beam Power Tube

(1) Tested Strong RCA 6BK5 Tube with Box Date Code AY Beam Power Tube

(1) Tested RCA 6AG5 Tube Date Code LS RCA Sharp Cutoff Pentode Tube

(1) Tested RCA 6CU5 with Box Date Code NF Black Plate Beam Power Pentode Tube

(1) Tested RCA 50A5 Tube with Box Date Code KJ Tube 50A5 Loctal Beam Power Tube

(1) Tested Strong RCA 6JN6 Tube Date Code AS. Beam Power Pentode Tube