Matched Pair RCA USA 5Z3 2 Black Plate [] Get ST HANGING FILAMENT Vacuum Tubes

RCA $74.95

Tube Type / Number: 5Z3
Actual Brand*: RCA
Printed Brand: RCA
Quantity of Tubes: Matched Pair
Plate Construction: 2 Black Smooth
Getter Construction: Bottom []
Country of Manufacture: USA
Visible Date Codes: V4E & 622
Lettering Condition: 100 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Circle
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes: ST, Hanging Filament

Gm Test Results: 40/46 & 44/46

Minimum Good Value: 40/40
NOS Test Value: 50/50
Life Calculation: % (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.

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Description

Tube Type / Number: 5Z3
Actual Brand*: RCA
Printed Brand: RCA
Quantity of Tubes: Matched Pair
Plate Construction: 2 Black Smooth
Getter Construction: Bottom []
Country of Manufacture: USA
Visible Date Codes: V4E & 622
Lettering Condition: 100 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Circle
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes: ST, Hanging Filament

Gm Test Results: 40/46 & 44/46

Minimum Good Value: 40/40
NOS Test Value: 50/50
Life Calculation: % (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.

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Additional info

SKU: PE976
Availability: Ships in 1 business day or less.
Shipping: Calculated at Checkout