HERE IS A VERY STRONG AMPEREX ECC85/6AQ8 VACUUM TUBE. THIS TUBE TESTS EXCELLENT AT 100% FOR EMISSION ON BOTH TRIODES WITH NO SHORTS OR GRID LEAKAGE. TESTED ON A B&K 600 TESTER. ETCHED CODES ARE XXX/^5G. 1955 VINTAGE. MADE IN HOLLAND. VERY NICE TWIN TRIODE TUBE. BUYER PAYS SHIPPING.