Brand Spanking New in Box, Matched Pairs 1971 Heerlen* Holland Production PHILIPS SQ E88CC 6922. Heerlen Plant date codes 7LG 41G1 or 41F4. These select Special Quality SQ Holland made E88CC/6922 are some of the finest by Amperex/Philips. Pairs will have the same date/batch code.

*Heerlen plant tubes were sold with different labels like Amperex, Miniwatt, Philips, Bugle Boy and also relabeled by various Philips associates or companies owned by Philips like Valvo, Mullard, La Radiotechnique RTC, Siemens, Adzam etc. Etched date codes tells the origin of the tube.

Tested and matched on Top of the Line Calibrated Hickok 580 Lab Grade Tester. New E88CC tests in the 10,500 - 11500 mmhos range on this tester.

Matched Pair = $275. E-mail if you need matched quads/sextet/octet.