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

Sylvania NOS 13GF7 Vacuum Tube Tested

Vintage Sylvania 13GF7 Tube Nos Tested

VINTAGE NOS SYLVANIA 6GF7 VACUUM TUBE TUBES USA TESTED TUB13080

Sylvania NOS 6GF7 Vacuum Tube Tested

Vacuum tube 13GF7 Sylvania tested good and FREE SHIP

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

Lot of 13 Vintage 12AV7 5965 Type Radio Vacuum Tubes, RCA Sylvania + Test Good