Up for sale, a of LOT of 7 used 6SL7 GT tubes. Some are mil-spec. Hi-quality US tubes. Most made in 1960s. They don't match up as pairs. The pictures should give you a clear idea of what you'll receive.Tested on Bill Eccher-calibrated Hickok 539C tester. All had 2-3 mA current draw. These may be useful to an amp builder or commercial dealer. See details on each tube in the list below. GE - 1900 / 1650 gm 63mm high. (1000 minimum). GE - 1700 / 1650 56mm high. RCA - 1650 / 1300. Tung Sol JAN CTL 1700 / 1700 black glass. Sylvania 1600 / 1600 tall 68mm. Sylvania JAN 1952? 1740 / 1740. Sylvania 1700 / 1800 no print left. Buyer will receive 7 good 6SN7GT tubes, as shown. Asking $65. Will be well-packed and shipped within US, $9 add'l, by US Postal Priority box. See my other tubes, my seller feedback, and thanks for looking. -Pete
| 
