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Standard USA 6BK7A Black Plate Top Horseshoe Get Vacuum Tube 92/85%

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SKU:
TM2520
UPC:
Standard 6BK7
MPN:
Standard 6BK7
Availability:
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Now: $0.47
Was: $0.79

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Description

Tube Type / Number: 6BK7A
Actual Brand*: Standard
Printed Brand: Standard
Quantity of Tubes: Single
Plate Construction: Black
Getter Construction: Top Horseshoe
Country of Manufacture: USA
Visible Date Codes:
Lettering Condition: 25 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Sawblade
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - NOT Original
Notes:

Gm Test Results: 65/60

Minimum Good Value: 43/43
NOS Test Value: 71/71
Life Calculation: 92/85% (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.

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Additional Information

Item Type:
Vacuum Tubes
Production Era:
Vintage & NOS
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