True NOS NIB Western Electric 274A [] Getter Vacuum Tube - MINT

Tube Type / Number: 274A
Actual Brand*: Western Electric
Printed Brand: Western Electric
Quantity: 1 Piece-Single
Matching Date Codes? 
Plate Construction: Black
Getter Construction: Bottom []
Country of Manufacture: USA
Visible Date Codes: 5739
Lettering Condition: 100 Percent
Number of Mica Spacers: 2
Mica Spacer Shape: 
Glass Coating: Clear
Engraved Base? No
Boxes (always included): All Original
Notes: 
Tested For & Matched By: Emissions

An absolute gem - it doesn't get any better than a truly NOS NIB Western Electric tube!

Test Results: 55/58
Minimum Good Value: 40/40
NOS Test Value: 50/50
Life Calculation: 100%+ (where 65% = fail)

Tests as NOS?: Yes
True NOS?*: Yes

** 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.