Rene, you need to speak to Axel Steinbach, he's the German ESRA rep as well as a lawyer & has helped with a lot of legislation regarding registration of rods in Germany. I've messaged him to let him know you need help, he's on Facebook.
Edit, just spoke with Axel, he's not got much to do with it any more but suggests you speak to either Mario (0176 56647163) or Ingo (0157 74498404) via whatsapp, they should be able to help.
MisteR Tee
Ah, Nostalgia, it ain't what it used to be!
No longer wanted: Steel 26/27 Ford Model T coupe rear fenders.