I do not know what a mantle clock looks like. Is it a clock that has a cape attached to it. Does it have a cover that goes over it. Several Mantle clock are mentioned on this site and I wonder what they are. I know about shelf and MANTEL clocks, could I be missing something? I am not sure that a clock should be on a mantel if a fireplace is normal used for heat. The case may dry out and the movement may get smoked up. But they do look nice there. ..Bob..