ornate iron fireplace cover

heavy cast iron panel curved outward at the top, little rust, reinforcing ridges along back edges on the top of the back, the numbers 1358 appear in large raised numbering on top back, on the top side facing sideways is the number 49 also in raisd print. Peice looks great, No holes on sides to attach to anything, There is one knob on the top made from plate metal formed into its shape with a flat ended oldish looking flathead screw holding it onto the peice. There is one hole at the bottom center of the peice about the same size. There is a silvery remmnant coating on the front and the knob as though it once had a plating of some kind.

The design has greek features. a nude woman with children one a satyr playing double horned flutes in the wilderness.

My dad was able to deduce it being a fireplace cover and online searches confirmed that. I was hoping to find the age and maker. tx.