RCA
Matched Pair RCA USA 50B5 Black Smooth Plate Top [] Get Vacuum Tubes 81% & 95%
- SKU:
- PE563
- UPC:
- RCA 50B5
- MPN:
- RCA 50B5
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: 50B5
Actual Brand*: RCA
Printed Brand: RCA
Quantity of Tubes: Matched Pair
Plate Construction: Black Smooth
Getter Construction: Top []
Country of Manufacture: USA
Visible Date Codes:
Lettering Condition: 100 Percent
Year Made:
Number of Mica Spacers: 2Saw
Glass Coating: Clear
Engraved Base? No
Boxes Included? Multiple Boxes - ALL Original
Notes: All American 5
Gm Test Results: 60 & 70
Minimum Good Value: 45
NOS Test Value: 74
Life Calculation: 81% & 95% (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.