Two, Philco branded, Sylvania made, 6J5G tubes with the tall shouldered glass bulb. Black, round plates, engraved logo bases. The 6J5G tube can be used in applications calling for the 6J5GT and 6J5 tubes. Tested on a Hickok TV-3 military tester that has been calibrated. Firm bases, excellent silvering. Tubes are matched for structure and dynamic gain- test at 3250, 3125, where pass/fail is 1625 micromho. The tubes have the same structure inside and out, having matching date codes of "S...7", September of 1937. Many other lots of tubes for sale this week.Shipping is free within the continental US. Elsewhere- exact postage only, no packing fee.