hey Foolishgold, It looks like part of an automobile ornament (grill, hood, or trunk) from a vintage De Salle, La Salle, Coupe de Ville, Bonneville, or some other "LLE" ending model. Good luck, Sub
I was going to post the same thing with exactly the same list! (dang, it works better we think differently sometimes).
I'd think hood ornament (as SubT mentioned) or could be part of a radiator cap, as the other applications wouldn't have the pattern on the back as well.