Graniteware Blue and White Baking Tray

I am not sure how to describe this pattern, it is a bit of a cross between swirl and spatterware. The pattern is not unusual as I have a few others like it. What is unusual is that it is a baking pan. Looks like something for making lasagna or a casserole.
The handle looks black but it is actually dark blue. Sadly one of the handles has broken off. But as it is an unusual piece I bought it anyway.
It is 15" x 10 1/2" and already to have a Stouffer's frozen lasagna put in it and pretend I made it.