Western Electric USA JAN-CW-5D21 Gray Vacuum Tube

Tube Type / Number: JAN-CW-5D21
Actual Brand*: Western Electric
Printed Brand: Western Electric
Quantity of Tubes: Single
Plate Construction: Gray
Getter Construction:
Country of Manufacture: USA
Visible Date Codes: 457283
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape:
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - NOT Original
Notes:

Gm Test Results: Untested Used - Appears to be a used tube and is sold as untested. SOLD AS-IS WITH NO RETURNS AND PRICED ACCORDINGLY.
Minimum Good Value: N/A
NOS Test Value: N/A
Life Calculation: N/A% (where 65% = fail)

Tests as NOS?:
True NOS?*:

** 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.