Sylvania
Date Matched Pair Sylvania 12AT7 [ECC81] Grey Plate 3 Mica Vacuum Tubes 108/80%
- SKU:
- PH0718
- UPC:
- Sylvania 12AT7
- MPN:
- Sylvania 12AT7
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: 12AT7 [ECC81]
Actual Brand*: Sylvania
Printed Brand: Sylvania
Quantity of Tubes: Date Matched Pair
Plate Construction: 2 Grey Ribbed
Getter Construction: Top []
Country of Manufacture: USA
Visible Date Codes: GF EFV
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 3
Mica Shape: Saw
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes:
Gm Test Results: 3700/2810 & 3800/3050
Minimum Good Value: 2275/2275
NOS Test Value: 3500/3500
Life Calculation: 108/80% & 109/87% (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.