1 SI Number Plate
The known history of 1SI, bringing together documented vehicle assignments, auction sales, advertisements, photographs and other evidence.
Last checked by our plate checker: 4 Sept 2026, 14:10
1 SI (1SI) — Number Plate History & Timeline
Also written as 1SI. History, past vehicles, DVLA records, auction sales, advert appearances, spotted photos, pictures and images for number plate 1 SI.
Issued
This number plate was originally issued between 1903 and January 1963
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What is 1 SI worth?
The value of 1 SI is influenced by its rare 1x2 dateless format, the relevance and popularity of the letters SI and prices achieved by comparable registrations.
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