NOTE: From the same lot of Item 606 except this pair has Imperfect Test Scores.Brand New, Matched Pair MINT NOS Rare April-Aug 1968 Industrial Grade E88CC 6922 with individual 4 digit serial number Etched in Glass.
IMPERFECT TEST SCORES. Etching is easily visible on some and hard to see on the others. Made in Hungary. Industrial grade tubes were subject to rigorous test and burn in process. These tubes were produced in limited quantities (between 5000-10000 tubes according to Zeitmann from Hungary). Repacked in generic white boxes from bulk.
Tungsram made some of the finer tubes in Eastern Europe due to its exposure to subsidiaries in Gt. Britain and Austria.
Tested and matched on Top of the Line Calibrated
Hickok 580 Lab Grade Tester recently calibrated by late Chris Haedt. New E88CC tests in the 10,500 - 11500 mmhos range on this tester.
TEST SCORES: 12000-10500, 10500-12000 mmhos.Matched Pair = $60.
