12AX7 ECC83. 1959 RAYTHEON USA. 12AX7 LOW-NOISE TYPE. RARE NOS "BETTER THAN FACTORY SPEC" TUBE. AUTHENTIC NOS MADE IN USA. NOTE: Box is missing a flap. Insignificant what the condition the box is in, you're listening to the tube - that's what counts, tone, quietness, non-micro-phonic, and electrical condition of the tube, that's what counts!
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