Originally Posted By Peter J
I doubt it is a UK registration, TSI is not a letter combination that was used as the letter I could be confused with 1.

Not exactly true, "I" was allocated to Irish counties.

Looking at the Wikipedia article Vehicle registration plates of the Republic of Ireland it seems TSI was Dublin. However I think Peter's second point is valid, there weren't any 3 letter 4 number combinations.

BTW, over here it's LICENCE ... we know the difference between a noun and a verb. smile

~iw

2011 Morgan 4/4
1932 Austin 7 Chummy