NOS NIB Mullard Great Britain 27GB5 [PL500] Grey Plate Top O Get Vacuum Tube

Mullard $1.95

Tube Type / Number: 27GB5 [PL500]
Actual Brand*: Mullard
Printed Brand: RCA
Quantity of Tubes: Single
Plate Construction: Grey
Getter Construction: Top O
Country of Manufacture: Great Britain
Visible Date Codes: EW
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Saw
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - Original
Notes: Tested for Emission ONLY

Gm Test Results: 110

Minimum Good Value: 70
NOS Test Value: 100
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.

Returns

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.

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Description

Tube Type / Number: 27GB5 [PL500]
Actual Brand*: Mullard
Printed Brand: RCA
Quantity of Tubes: Single
Plate Construction: Grey
Getter Construction: Top O
Country of Manufacture: Great Britain
Visible Date Codes: EW
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Saw
Smoked Glass? Clear
Engraved Base? No
Boxes Included? 1 Box - Original
Notes: Tested for Emission ONLY

Gm Test Results: 110

Minimum Good Value: 70
NOS Test Value: 100
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.

Returns

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.

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Additional info

SKU: TH6171
Availability: Ships in 1 business day or less.
Shipping: Calculated at Checkout