The vase is paneled and a hexagon shape, the bottom is unmarked, and there is something inside of it about a quarter inch thick and round about the same size as the bottom which bounces around inside if you move the vase which I think may be water deposit chunck from years of use that is bigger than the hole at the top so it does not come out unless it's broken up. The last picture is a four and a half inch vase for comparison that is not included.
This item is in the category "Antiques\Asian Antiques\Japan\Vases". The seller is "missywas1st" and is located in this country: US. This item can be shipped to United States.