9 Sylvania 6SR7 Vacuum Tubes NOS NIB Lot Of Nine Neutrality During They were made by Ken-Rad

They were made by Ken-Rad although one is branded "Crosley

32 and 36 where minimum (65%) is 25

This is a sold

47 and 54 where minimum (65%) is 36 and 100% is 55

new in box Sylvania 6SH7 tubes tested to spec on our Paul Hart-calibrated TV7/U

9 Sylvania 6SR7 Vacuum Tubes NOS NIB Lot Of Nine Neutrality During They were made by Ken-RadThis lot of nine new old stock, new in box Sylvania Sylvania MANUFACTURED 6SR7 tubes tested to spec on our Paul Hart calibrated TV7 U. The GM LABELED ones all have 312 Sylvania EIA codes. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA