RCA Cunningham
Date Matched Trio (3) RCA Cunningham USA 6SJ7 Metal Vacuum Tubes 91% & 91% & 90%
- SKU:
- PH0048
- UPC:
- RCA Cunningham 6SJ7
- MPN:
- RCA Cunningham 6SJ7
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: 6SJ7
Actual Brand*: RCA Cunningham
Printed Brand: Cunningham
Quantity of Tubes: Date Matched Trio (3)
Plate Construction:
Getter Construction:
Country of Manufacture: USA
Visible Date Codes: Y5E
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers:
Mica Shape:
Smoked Glass? Metal
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes:
Gm Test Results: 60 & 60 & 60
Minimum Good Value: 40
NOS Test Value: 66
Life Calculation: 91% & 91% & 90% (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.