Thanks to all for your help. Already tried the big part suppliers as CI, Ames, Performance Years, the Paddock and Year One. They all refuse sending these hazardous items to Germany...
Funny thing - it can be done and it´s no pita. For example Rick´s First Generation ships rattle cans overseas without any concern and even without any extra costs. Hirsch shipped me the correct engine´s paint within 2 weeks... As John told the only thing they have to do is to pack and label it correct... Obviously too much work for the big sellers.
Unfortunately, Rick´s and Hirsch´s don´t carry these items... But Gary had a good hint, too: will try to get it shipped from Eastwoods. I think they should know the trick... Already have the masking kit - not hazardous - only need high quality paint.