Mid 2nd-3rd century AD. Osterburken style, named after the Baden-Wurttemberg town where these were found. Refer to Romermuseum Osterburken and Roman Military Belts, https://www.forumancientcoins.com/numiswiki/view.asp?key=Military%20Belts, third image. This example is 1 ¾ “ in length, bronze, skillfully worked, and as found with encrustation from burial.
