Which plaque??

Hello together, I am a proud owner of an old 323er, bf 60. after a long car abstinence I got another one. after the first shock moments (insurance,tax) the next sobering threatens me…this thing with the plaques, so the inner cities remain clean from fine dust (who believes…) so I have once stumbled on the internet with the result that I can not get a plaque…not that I am so keen to get one, but I often drive a strec ke which is only accessible with a badge (orange and green or so)….but as far as I know, every vehicle gets a badge…. the 2 numbers that are important for the badge are 09…with these numbers the internet can’t do much…says that I don’t get a badge… someone knows about this theme and can give me some tips or something?? thank you for the answers