Sylvania NOS 13GF7 Vacuum Tube Tested

5546 LOT OF 13 SYLVANIA ROGERS CESCO WESTINGHOUSE ADMIRAL 6SJ7 Vacuum TUBES

Sylvania 13GF7 Electronic Vacuum Tube, With Original Box ~ Tested

5589 LOT OF 6 SYLVANIA MINIWATT ADMIRAL SUPERIOR ZENITH 13EM7 15EA7 Vacuum TUBES

Vacuum tube 13GF7 Sylvania tested good and FREE SHIP

Vintage Sylvania 13GF7 Tube Nos Tested

Vacuum Tube, 12BY7A, Sylvania, NOS, Sharp-Cutoff Pentode, Tested Hickok 752A

Sylvania Electronic Vacuum Tube 6GF7 - NOS with original Box ~ Tested