GE USA 6EA7 [= 6EM7] Gray/Black Plate Side [] Get Vacuum Tube 90/95%

Tube Type / Number: 6EA7 [= 6EM7]
Actual Brand*: GE
Printed Brand: Zenith
Quantity of Tubes: Single
Plate Construction: Gray/Black
Getter Construction: Side []
Country of Manufacture: USA
Visible Date Codes: 59-43/188-5
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Sawblade
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - NOT Original
Notes: ** TESTED FOR EMISSIONS NOT GM - THESE TUBES OSCILLATE BADLY ON MOST GM TESTERS **

Gm Test Results: 90/95
Minimum Good Value: 50/50
NOS Test Value: 100/100
Life Calculation: 90/95% (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.