HERE IS A NICE PAIR OF RAYTHEON 12AX7A BLACK PLATE VACUUM TUBES. THESE TUBES BOTH TEST EXCELLENT AT 100% FOR EMISSION ON BOTH TRIODES WITH NO SHORTS OR GRID LEAKAGE. TESTED ON A B&K 600 TESTER. 1959 DATE CODES. LARGE BLACK PLATES AND TOP MOUNTED HALO GETTERS. GREAT IN GUITAR AMPS. HAVE BALDWIN ORGAN LOGOS. 280 RAYTHEON RMA CODE.PICTURE IS GENERIC. FREE U.S SHIPPING.