(3%) Match Pair Amperex Ecc83 12AX7A Grey Plate Halo Get Tube TV7&Maxi Test NOS£
Closely matched pair at ~ 3%. Matching codes also. Very nice and clear printing. Gas (Grid Current)Test: Passed. Mutual Conductance (GM)Test: 50 & 49 and 50 & 52 (49 = Average NOS and 32 = Good MINIMUM).