Matched and code-matched pair of 1959 CBS 12BY7A black glass vacuum tubes. New old stock, new in their original CBS boxes.
Both tubes tested 6600 GM, against a nominal new reference of 6500 GM—a strong, evenly matched pair.
Includes both tubes and both original CBS boxes shown in the photos.
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| Listed | 4 hours ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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