The piece is 23-3/4" long by 11-3/4" wide, carved into an oval slant cut slab of walnut. It's hard to find a slab this size without significant cracking and that is so symmetrical. There's one relatively minor crack at the bottom that has been filled with a mix of epoxy and sawdust, and one very tiny crack at the top.
It has a recessed hanger on the back to hang securely from a screw. It is heavy so that screw should either be in a stud or a good drywall anchor. It presents best when lit from the side with a raking light, the fourth picture gives you an idea how it looks under flat lighting.