Well, the internal structure looks right for the age given. And yes, the top is probably a replacement. The shape of the edge looks too simple and modern. The original top was probably wood and suffered damage, so it was replaced at some time with marble. I'm not sure I see the holes you mentioned; where are they on the upper edge? How large are they?

I now recant my statement about machine carving. Asymmetry is a good indication that it was hand carved. Perfect symmetry means machine made. Also, the roughness around the leaves indicate hand work. The wood used for the front of the case may be different from the wood used on the side. Or not. A picture of the screw would be good to determine if the core or thread is tapered or the core is tapered and the thread is not. Are both screws an exact match? Is the screwdriver slot in the middle on each of the heads? All these things would be readly apparent if one were to see the object in person, but are difficult to discern from parceled out photographs. So far, I believe Casey's appraisal is holding up. Still a very nice piece of furniture.

The armless ones do look good though -- and last longer because ... no one sits it them for long. That's also why parts of a sectional last a lot longer than other parts. Hope you find just the right chair. Houzz has a lot of them in a lot of styles. Happy hunting.

Beautiful, looks as if it might be a Mississippi/Alabama area Plantation style home. I hope it's not too far gone, because the grounds look really lovely with the pond out back.