RCA Cunningham
Date Matched Pair RCA Cunningham USA Type 58 SMOKED ENGRAVED Vacuum Tubes 95%
- SKU:
- PE078
- UPC:
- RCA Cunningham Type 58
- MPN:
- RCA Cunningham Type 58
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: Type 58
Actual Brand*: RCA Cunningham
Printed Brand: RCA Cunningham Radiotron
Quantity of Tubes: Date Code Matched Pair
Plate Construction:
Getter Construction:
Country of Manufacture: USA
Visible Date Codes: L8
Lettering Condition: 100 Percent
Year Made:
Mica Spacers: 2
Smoked Glass? Yes
Engraved Base? Yes
Boxes Included? 2 Boxes - Both NOT Original
Notes: ST
Gm Test Results: 56 & 64
Minimum Good Value: 36
NOS Test Value: 59
Life Calculation: 95% & 108% (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.