105 C 129 69

This time, there is a department code (69 = Rhône) : 105 C 129 69

+1

I corrected, but why are all numbers attached in this case?

0

The person who made the license plate has not respected the official text which make a period mandatory between the serial and the department code.
In fact, a space always replaces the dot, but sometimes the space is missing.

+1

Ok I understand, thank you.

0

You're welcome !
Five digits serials only exist with the 431 K prefix

+2