Mullard England GN-4D Nixie Tube Vacuum Tube GN4D
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- Calculated at Checkout
Tube Type / Number: GN-4D
Actual Brand*: Mullard
Printed Brand: ITT
Quantity: 1 Piece-Single
Matching Date Codes?
Plate Construction: Grey
Country of Manufacture: England
Visible Date Codes: 7241 9732 K/F
Lettering Condition: 90 Percent
Number of Mica Spacers:
Smoked Glass? Clear
Engraved Base? No
Boxes (always included): All WB/Generic
Notes: Nixie Tube
Tested For & Matched By: NA
Gm Test Results: Untested NOS - Appears to be NOS but without the original box. Returns will be accepted if the tube does not work.
Minimum Good Value: NA
NOS Test Value: NA
Life Calculation: N/A% (where 65% = fail)
Tests as NOS?:
** 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.
All of our tubes are 100% guaranteed to arrive as described, test as described and to be void of any sound defects. We offer a 30 day return window from the day you receive the item.
PLEASE NOTE - While we accept returns for basically any fault, we DO NOT accept returns for buyer's remorse which includes buyers who decide they don't like the subjective tonal signature of a tube. We have had people exploit our generous return policy to tube roll on our dime so we have a strict policy against this behavior.
Vintage & NOS