21 KEY Number Plate
The known history of 21KEY, bringing together documented vehicle assignments, auction sales, advertisements, photographs and other evidence.
Last checked by our plate checker: 18 Oct 2026, 13:12
21 KEY (21KEY) – Number Plate History & Timeline
Also written as 21KEY. History, past vehicles, DVLA records, auction sales, advert appearances, spotted photos, pictures and images for number plate 21 KEY.
On Vehicle
Currently on a 2019 Silver Porsche Panamera
Sold
This number plate was issued at a DVLA auction in April 1991.
It sold for a hammer price of £2,500 and a total of £3,231 including fees and taxes.
Accounting for inflation, that's £7,607 in today's money.
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What is 21 KEY worth?
The value of 21 KEY is influenced by its dateless format, the relevance and popularity of the letters KEY and comparable sales.
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