Tung-Sol (Vintage)
Matched Pair Tung-Sol USA 12BY7A [12BV7 12DQ7] Black P Vacuum Tubes 76% & 95%
- SKU:
- PX1452
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: 12BY7A [12BV7 12DQ7]
Actual Brand*: Tung-Sol
Printed Brand: Zenith & Tung-Sol
Quantity of Tubes: Matched Pair
Plate Construction: Black Ribbed
Getter Construction: Top Fat D
Country of Manufacture: USA
Visible Date Codes: 322606-3
Lettering Condition: 0 Percent
Year Made:
Mica Spacers: 2
Smoked Glass? Yes
Engraved Base? No
Boxes Included? 2 Boxes - Both NOT Original
Notes:
Gm Test Results: 42 & 52
Minimum Good Value: 35
NOS Test Value: 55
Life Calculation: 76% & 95% (where 65% = fail)
Tests as NOS?: No
True NOS?*: No
** Please note, many tubes will test NOS but will actually have a few hours of use on them. A truly NOS tube will have excellent getter flashing condition, no dirt/grime, usually in the original box, and no filament deposits. If a tube is listed as "tests NOS" but is listed as "not True NOS" please expect the tube to have a small amount of use *
All tubes have been tested using only the best tube testers. We have a large fleet of tube testers, and every single one of them has been calibrated within the last year by industry experts. We mainly use the Hickok TV-7D/U, but occasionally we may use a Hickok 539, 533A, or 600A.