Picked up this plate at a local estate sale this weekend. I waw hoping that someone on the forum could help me with the history.

The plate says Ernst Kern Detroit on it. I know that is it from the Kern's store. Just wondering why it was made and when. It looks like it was made by Villeroy & Boch, judging by the backstamp.

Any ideas on the time frame or anything about it? Thanks everyone!