NOS NIB Date Matched Pair RCA USA 12AL5 Black/Silver Plate [] Get Vacuum Tubes

Tube Type / Number: 12AL5
Actual Brand*: RCA
Printed Brand: RCA
Quantity of Tubes: Date Matched Pair
Plate Construction: Black/Silver
Getter Construction: Top []
Country of Manufacture: USA
Visible Date Codes: 417 [2]
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Sawblade
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - ALL Original
Notes:

Gm Test Results: 51/50 & 51/51
Minimum Good Value: 40/40
NOS Test Value: 50/50
Life Calculation: 100+% (where 65% = fail)

Tests as NOS?: Yes
True NOS?*: Yes

** 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.