Description
Two, Raytheon 6SN7GT tubes. Two reinforcing rods, black, flat plates, yellow-orange printed logo bases - a structure borrowed from the wartime VT-231. Outstanding sonics. Tested on a Hickok TV-3 military tester that has been calibrated. Firm bases, excellent silvering. Tubes are matched for dynamic gain and structure- test at 2750-2625 and 2750-2625 where pass/fail is 1625 micromho. They have the same structure inside and out, having date codes "1-52", the 52nd week of 1951. Many other lots of tubes for sale this week. Shipping is free within the continental US. Elsewhere- exact postage only, no packing feee