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  • Date Matched Pair Zenith USA 6SD7GT Mesh Plate Top Get Rattle Vacuum Tubes 92%

Date Matched Pair Zenith USA 6SD7GT Mesh Plate Top Get Rattle Vacuum Tubes 92%

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Product Description

Tube Type / Number: 6SD7GT
Actual Brand*: Zenith
Printed Brand: Zenith
Quantity of Tubes: Date Matched Pair
Plate Construction: Silver Mesh
Getter Construction: Top
Country of Manufacture: USA
Visible Date Codes: 16 [2]
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Round
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes: Rattles [1]

Gm Test Results: 23 & 23

Minimum Good Value: 15
NOS Test Value: 25
Life Calculation: 92% & 92% (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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