This is a beautiful belt buckle from a hoard with matching mounts, both vertical and horizontal!  You can use the horizontal mounts on the belt around your waist and then follow up with the vertical mounts on the belt part that hangs down.  J-03 and J-04 are the matching mounts available separately on the website.  2 1/2" x 13/16" for 9/16" belt 6.5 cm x 2.3 cm for 1.4 cm belt