FNI
Read it from the right: the last two digits are the département where the car was registered — 75 was Paris — and moving house meant a new number. Everything before is that département's own counter, digits climbing to 999 before the letters tick over.
In the sample, L stands for any letter and 9 for any digit.
~1984–2009
documented from 1984 — the format is likely older
issued for: car, van, truck, bus, motorcycle, moped, trailer, semitrailer, tractor, machine
SIV standard
The SIV plate every French car has worn since 2009: a national lifetime number in AA-123-AA form, Euro-band left, chosen région band right.
Nothing in AB-123-CD means anything, by design: it is one national counter, issued once for the vehicle's whole life. The only geography on the plate — the département number in the right-hand blue band — is whichever one the owner fancied; a 75 proves nothing about Paris.
In the sample, L stands for any letter and 9 for any digit.
2009 → today
issued for: car, van, truck, bus, trailer, semitrailer, tractor, machine
SIV standard 275×200 mm
In the sample, L stands for any letter and 9 for any digit.
2009 → today
issued for: car, van, truck, bus, trailer, semitrailer, tractor, machine
SIV standard 300×210 mm
In the sample, L stands for any letter and 9 for any digit.
2009 → today
issued for: car, van, truck, bus, trailer, semitrailer, tractor, machine