1x TESLA ECC802S (=12AU7WA G73R 6067) lk Telefunken, 1982 Date Code 100%/NOS/NIB
ECC802S are industrial-grade tubes made for army or aerospace use, and other demanding applications. The tube is mint, evidently never used. Box was disinfected. The tube tests as NOS/100%+ 100% gm/S = 1.0 mA/V, 100% Ia = approx.