VALVO GERMANY E80CF 7643 for McIntosh MR-67 65B 71 Pinched Waist!!! Philips SQ

One platinum matched pair (2 tubes) E80CF 7643 made by Valvo in Hamburg plant in West Germany in 1960, rebranded Philips. They are carefully tested and matched, selected from big batch of identical tubes. All tubes are the same etched code on glass envelope. Long life, special quality, gold pin version, they last forever.