(1) NOS Mullard GE 12AX7A ECC83 Vacuum Tube | Excellent Condition | Blackburn UK Produced 1961 | Factory Date Code I63 B1B4. Tests at 60/54 with 32 being the minimum score for a good tube (with 65% life remaining).
(1) NOS Mullard GE 12AX7A ECC83 Vacuum Tube | Excellent Condition | Blackburn UK Produced 1961 | Factory Date Code I63 B1B4. Tests at 60/54 with 32 being the minimum score for a good tube (with 65% life remaining).