3 Sylvania 7W7 Vacuum Tubes NOS NIB Lot Of Three 1X2B Nonal Transconductance measured 2100 micromhos for

Transconductance measured 2100 micromhos for Tube One and 2175 for Tube Two

One is Wards -branded and the other is Zenith

respectively where minimum (65%) is 57/57 and 100% is 88/88

Their internal structures are all the same

5 out of 10

3 Sylvania 7W7 Vacuum Tubes NOS NIB Lot Of Three 1X2B Nonal Transconductance measured 2100 micromhos forThese three new old stock, new in box Sylvania 7W7 tubes tested to spec on our Paul Hart calibrated TV7 U. Three are GE and two are Sylvania. 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 MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY