PhilipsECG (Sylvania) 6AF9 Vacuum Tube Made In USA NOS +Box

VINTAGE SYLVANIA 6AF9 VACUUM TUBE TUBES ENGLAND TESTED TUB23119

International Servicemaster 6AF9 Vacuum Tube Made In Holland NOS +Box

VACUUM TUBE ~ 6AF9 ~ SYLVANIA ~ 6AF9

Sylvania 6AF9 Electronic (Vacuum) Tube (NOS) Original Box

(2) NOS Sylvania 6AF9 Vintage Radio Audio VACUUM TUBES Hickok 539C Tested

Sylvania - 6AF9- Vacuum Tube - NOS - Tests Good