Large Vintage tray

Vintage metal tray, needs cleaning. Some scratches as expected for it's age. I can't find any comparables on the Internet. It is light weight and the pattern seems to have been applied using a stencil. Its from our Parents' collection. We have no idea where it came from before that. It is possibly something our Great-grandfather brought back from his 'round the world' trip in the 1950's. 19 inches across