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  • NOS NIB Matched Sleeve (5) GE USA 12SJ7 Metal Vacuum Tubes 100+%

NOS NIB Matched Sleeve (5) GE USA 12SJ7 Metal Vacuum Tubes 100+%

$37.46
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Product Description

Tube Type / Number: 12SJ7
Actual Brand*: GE
Printed Brand: GE
Quantity of Tubes: Matched Sleeve (5)
Plate Construction: Metal
Getter Construction: Metal
Country of Manufacture: USA
Visible Date Codes: 58-17 188-5 (TWO), 4-48 188-5, 59-48 188-5, 5-52 188-5
Lettering Condition: 100 Percent
Year Made:
Mica Spacers: 2
Smoked Glass? No
Engraved Base? No
Boxes Included? 5 Boxes - THREE Original, TWO NOT Original
Notes:

Gm Test Results: 68 & 74 & 75 & 76 & 76

Minimum Good Value: 40
NOS Test Value: 66
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.

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