A Rus or Russian Viking Belt Mount or Tip. Based on a belt mount. From an exhibit "Ibn Fadlan's Journey: Volga Route from Baghdad to Bulghar" in a Moscow Museum. Several other pieces show about 25 mounts on a belt. Available here
http://raymonds-quiet-press.myshopify.com/products/viking-belt-mount-8th-9th-c-rus-25-of-n77
8th - 9th C. Mount/Tip 1 1/8" x 3/4" 2.9 x 2 cm