Matched Pair GE USA 6SN7GT BLACK Flat-Aligned Plate CB Vacuum Tubes 66/66%

Tube Type / Number: 6SN7GT
Actual Brand*: GE
Printed Brand: Zenith & Ken-Rad
Quantity of Tubes: Matched Pair
Plate Construction: Black Flat-Aligned
Getter Construction: Bottom []
Country of Manufacture: USA
Visible Date Codes: 0-35/188-5 & 0-48/188-4
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Sawblade Razor
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes: Cracked Base [1]

Gm Test Results: 1580/1580 & 1580/1950
Minimum Good Value: 1560/1560
NOS Test Value: 2400/2400
Life Calculation: 66/66% & 66/81% (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.