3 SI Number Plate
The known history of 3SI, bringing together documented vehicle assignments, auction sales, advertisements, photographs and other evidence.
Last checked by our plate checker: 4 Sept 2026, 13:39
3 SI (3SI) — Number Plate History & Timeline
Also written as 3SI. History, past vehicles, DVLA records, auction sales, advert appearances, spotted photos, pictures and images for number plate 3 SI.
Issued
This number plate was originally issued between 1903 and January 1963
Own 3 SI? Get a free valuation and cash offer here
Alternatively, list this plate on our site for free.
What is 3 SI worth?
The value of 3 SI is influenced by its rare 1x2 dateless format, the relevance and popularity of the letters SI and prices achieved by comparable registrations.
Found this interesting? Add NumberPlates.org as a preferred source on Google