GE Radiotron 6V6G 7408 Tube. Made in Canada. TV7 7D/U Tested NOS: 84/ 46 Baseline. Smoked Glass. No universal test result defines NOS. NOS tubes fall within the GM range published in the RCA Receiving Tube Manual; variation above/below average is normal.
6V6G 7408 Zenith Sylvania Tubes Pair Globe Smoked Glass TV7 Test Good SV6-7-8
Zenith 6V6G 7408 Tubes. Made in USA. TV7 7D/U Tested Good: 64/ 46 Baseline. TV7 7D/U Tested Good: 54/ 46 Baseline. Manufactured by Sylvania. Smoked Glass. NOS tubes fall within the GM range published in the RCA Receiving Tube Manual; variation above/below average is normal.