Grate Cover Round Cast Iron Antique not shops perfect

We have a Grate Cover Round Cast Iron shops Antique not perfect. It is about 12 1/2" across the center x about 3/16" in thickness. It is pretty much covered in surface rust with very little original black paint showing. The center has raised words "Bates 1857 Prov" with decorative cast iron scroll work surround the center. Unfortunately it is not perfect - there is a spot of the scrollwork which is missing on the right side center and there is a crack through and through from the bottom which extends up to below the 7 in 1857. It is still fairly solid but I would not want to put much pressure on the break. I would say it is in fair to poor condition.