A matched pair of new old stock Sylvania 6146B/8298A beam power amplifier vacuum tubes. Both tubes test 7100 uMhos-baseline acceptable 4750 uMhos. One tube tests 122.4 ma, the other 119.2 ma. plate current in test condition. Tested on Hickok AN/USM-118B or 539C tube tester. Tubes have same production lot number and are from a production bulk pack. Will be packaged in white tube boxes.