High quality beam tetrode 6P3S-E (6П3С-E) used in output stages of low frequency amplifiers. Made in Reflektor (Saratov) plant for export. Russian equivalent of the 6L6GC and 5881 tubes. High quality, long life - E tubes (not less than 5000 operating hours), gold plated first grid. New old stock, tested and will be delivered in modern brown boxes. Year of production: 1976.