I have heard before a short time a ask-JTF radioshow, where Chaim mentioned, that the Jews were in general very loyal citizens of Germany. They do all in their power to be good Germans.
He is right.
I have found in the book "The Jews of Oldenburg" [ISBN: 387358056X], written by Rabbi Leo Trepp a picture:
The translation of the text is:
Abb. 13: Decoration table, prayer for the terretorial lord from the years between 1831-1844, German and Hebrew, former synagog in Oevelgoenne, now museum Oldenburg.