RCA
NOS Matched Pair RCA USA 12X4 Black Plate Top [] Foil Strip Get Vacuum Tubes
- SKU:
- PX1722
- UPC:
- 12X4
- MPN:
- 12X4
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: 12X4
Actual Brand*: RCA
Printed Brand: FoMoCo & RCA
Quantity of Tubes: Matched Pair
Plate Construction: Black
Getter Construction: Top [] Foil Strip
Country of Manufacture: USA
Visible Date Codes: 69-30 & 274 5-48 M
Lettering Condition: 75 Percent
Year Made:
Mica Spacers: 2
Smoked Glass? No
Engraved Base? No
Boxes Included? 2 Boxes - Both NOT Original
Notes:
Gm Test Results: 50/50 & 52/50
Minimum Good Value: 40/40
NOS Test Value: 50/50
Life Calculation: 100+% (where 65% = fail)
Tests as NOS?: Yes
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.