Go to Tandy Leathercraft and look at the decorative hardware including Conchos and see if any of them fit your purpose. I thought sure they were called "escutcheons" but most all of them were protective key plates surrounding key holes either that or were plumbing decorations. They did include the war shields and their decorations though too. Go figure! All of them sharing the same name. Oh also the stern plate on a ship.
Gabby