Hi nilchen
You made your post a few days ago and nobody replied. I think everybody is afraid to give incomplete feedback, so also the simple part of your question is not answered. You need to do further research, but let me put you in following direction (I apologize if this is already clear for you, you checked and and did not success):
I think your item is Bauhaus style, pretty pure Bauhaus style. I would place it in the time frame 1920 to 1933. The style of the makers mark are typical Bauhaus. Unfortunately, I do not have a reference book for silver mark from the Bauhaus, but check the library.
To answer your question about the style check the Wikipedia article about the Bauhaus. Here the English version:
http://en.wikipedia.org/wiki/Bauhausand here the German version:
http://de.wikipedia.org/wiki/BauhausAs a start check following reference:
Book is in Dutch, German and English: Duits zilver na Bauhaus
In the "Bayrischen Staatsbiblithek" in Munich
http://www.bsb-muenchen.de/index.phpSome hours in the library could bring you to the solution. Or some members of this forum have a Bauhaus reference.
If I am right with my guess and it is Bauhaus, then: congratulation. Congratulation anyway, the item is beautiful.
Regards
Jörg