Sylvania USA 6SH7GT Gray Smooth Plate Top [] Get Light Rust Vacuum Tube 77%

Tube Type / Number: 6SH7GT
Actual Brand*: Sylvania
Printed Brand: Sylvania
Quantity of Tubes: Single
Plate Construction: Gray Smooth
Getter Construction: Top []
Country of Manufacture: USA
Visible Date Codes: 0-13
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Round
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - NOT Original
Notes: Light Rust, Metal Base

Gm Test Results: 55
Minimum Good Value: 43
NOS Test Value: 71
Life Calculation: 77% (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.