I've seen a bunch of much smaller diameter steel ones that I was sure were for ice. This is the first one of this size I've found.
They look like vertical lifting tongs. An Engineer's educated guess, because all horizontal log or brush grubber style tongs have a fixed pivot point so as the log does not loosen while being dragged due to jaw-connective joint loosening. Nice looking hand-made piece though. They look too nice to even use. I'd hang them up on a wall somewhere.