This is a cute but slightly damaged vintage Danish round metal tray by Sodahl, made in Denmark. It's 12 1/4" diameter with a 1" raised edge and is a blue with white tiny flowers print. The back is solid white. 
 
Sold AS IS because there's a damaged on the front at the bend/edge that's showing rust. AND there's a slight dent in the central area. Still it's adorable and would be cute on the wall or to use for serving snacks & tea.