I have 2 Matched Pair and 1 Single 6SN7-GTB Tubes listed. They are described below. All have been tested on a tube tester and checked by listening to in either a preamp or amplifier to be sure they not only measure well, but also sound good. Some have been tested twice, with different testers, hence different #s on boxes and tubes. I have had these stored and am thinning the herd. I have more tubes than I will ever use. Tubes will be well packed for safe transit. Buyer pays shipping. I usually ship on Tuesday and Friday. Take a look and see if there's something you may like. I have sold most of the tubes originally listed in this ad. Since USAM will not allow me to delete pictures, there are more pictures than tubes left for sale.
Raytheon 6SN7-GTB Matched Pair- Black Plates. $25
RCA 6SN7-GTB Matched Pair- Black Plates. $25
TungSol 6SN7-GTB Single- Black Plates, Reissue Orig Box $10