hello
my family has hosted many exchange students over the years. one of them was a german girl from bonn. she told me that the first letters are the local city and the second can be your name, or random. when i went to visit her in bonn all of the local plates started bn, in stuttgart they started st (i had to see the factory) and berlin bl, so i had mine made by bavarian auto sport (a bmw stuff supplier) to read buffalo. her parents had made me one to read op jc230, but when i went to register it in ny i could not because they (dot) said it could be read "official police" so i went with buffalo.
i hope this helps, dont know if its 100% accurate, but its what i saw and heard.
jake

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