(1) Tested Sylvania 6EW6 Tube Date Code 548 Sharp Cutoff Pentode Tube

(1) Tested RCA 3DT6A Tube with Box Date Code BM Sharp Cutoff Pentode Tube

(1) Tested Raytheon 6EW6 Tube with Box Japan Code T10 Sharp Cutoff Pentode Tube

(1) Tested Motorola 6EW6 Tube Date Code 60-26 Sharp Cutoff Pentode Tube

12BA6 x3 All American 5 Pentode Radio Tubes-Tested-90% or Better-Free ShippingUS

(1) Tested RCA 6HS8 Tube with Box Date Code BV Sharp Cutoff Twin Pentode Tube

(1) Tested RCA 3CE5 Tube with Box Date Code MI Sharp Cutoff Pentode Tube (a)

(1) Tested RCA 3CE5 Tube with Box Date Code MG Sharp Cutoff Pentode Tube (a)