Up for sale, 9 used 5687-type tubes. All are made in USA, ca. 1960s, and have long 17mm plates. Similar but not identical construction. It's a mix of assorted tubes and I only keep the highest testing. Black and 'bronze' plates. Some are missing some print. See the pictures. I got these for a preamp but now don't need them. Details below:Tested on my calibrated Hickok 539C tester. Some test as NOS.
All show 8200 to 9200 gm (4800 min), and w/ current 16-23 mA (with one T-S exception).
4 GE - 1 is JAN 5687WA; another is a Tung-Sol overprinted GE. also 5-star. 2 RCA - 1 has bronze-y plates. 1 Raytheon- bronze plates. 1 Sylvania - JHS 5687WA. 1 Tung-Sol - 1958 bronze plate. These all came from the collection of a retired telecommunications engineer I knew. The set may be useful to an audio enthusiast or commercial dealer. Buyer will receive 9 tubes, and 6 boxes as shown. Asking $59. Returns allowed but must return all, no partial refunds. Will be well-packed and shipped within US, $3 by US Postal. Much more for overseas mail. See my other tubes and thanks for looking.
-Pete
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