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National Union

NOS NU USA 6BL7GT 2 Black T Plate [] Get 3 MICA Vacuum Tube 100+%

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SKU:
TE5484
UPC:
NU 6BL7
MPN:
NU 6BL7
Availability:
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Shipping:
Calculated at Checkout
$14.75

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Description

Tube Type / Number: 6BL7GT
Actual Brand*: NU
Printed Brand: NU
Quantity of Tubes: Single
Plate Construction: 2 Black T
Getter Construction: Top []
Country of Manufacture: USA
Visible Date Codes: 5413
Lettering Condition: 100 Percent
Year Made:
Number of Mica Spacers: 3
Mica Shape: Saw
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - NOT Original
Notes: Fat Base

Gm Test Results: 52/50

Minimum Good Value: 25/25
NOS Test Value: 40/40
Life Calculation: 100+% (where 65% = fail)

Tests as NOS?: Yes
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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