HERE IS A NICE MATCHING PAIR OF AMPEREX BUGLE BOY EL84/6BQ5 VACUUM TUBES. THESE BOTH TEST EXCELLENT AT 100% FOR EMISSION WITH NO SHORTS OR GRID LEAKAGE. TESTED ON A B&K 600 TESTER. ETCHED NUMBERS ARE RX3/^0# ON BOTH. 1960 VINTAGE. LARGE GRAY PLATES AND TOP MOUNTED D FOIL GETTERS. GREAT AUDIOPHILE GRADE EUROPEAN VACUUM TUBES. DON'T MISS THESE. BUYER PAYS SHIPPING.