3 Sylvania 10GK6 Vacuum Tubes NOS NIB Lot Of Three May 25 2020 a silkscreened base

a silkscreened base

two are industrial versions

I am playing them as I write in my Sound Craftsmen SC-2 mono-block amplifiers with Neil Young's "Harvest" and they sound outstanding

gas and transconductance on our Paul Hart-calibrated TV7/U as well as a Hickok and a Superior

3 Sylvania 10GK6 Vacuum Tubes NOS NIB Lot Of Three May 25 2020 a silkscreened baseThese three new old stock, new in box Sylvania 10GK6 tubes tested to spec on our Paul Hart calibrated TV7 U. 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 PURCHASE PROTECTION COVERS ITEMS