Special trick: if you want something to look like it was made in Germany, paint it in RAL colours. Works like a charm every time.
Yes
> " ... or Tannenberg for "retro" look."
No
Only if with retro you mean a kitsch Hollywood version of Germany whose role model only existed for a few years - from 1935 until the Nazis banned Fraktur-style typefaces (like Tannenberg) because they deemed them too Jewish.