RARE Tung-Sol 5687 Black, Ribbed, 12AX7 Style Plates, Well Matched Pair (8.7%) NOS
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This is an a well matched pair of Tung-Sol 5687 tubes. Each one of these tubes tests very closely to the other. These tubes are visually very similar. These tubes have long black plates, white lettering, and a D shaped top getter. These tubes have the rare ribbed, 12AX7 style plates that were used in the early production runs. These are highly sought after Tung-Sol 5687 tubes, act quickly before they sell out!! More available upon request.
Be careful buying tubes from other sellers who list "matched pairs" but do not provide test results or specify the equipment that they use to test their tubes.
I personally tested this tube on my recently calibrated Hickok 600a and TV7D/U tube testers.
The results are as follows:
13,750/13,250
14,250/13,000
| Listed | a year ago |
|---|---|
| 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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