Found in the Poltava region of the Ukraine, this sword dates back to the early 7th century AD and is made of gold, iron, and glass. The object was made within a Byzantine workshop and was given by Byzantium to Kana Subigi Kubrat as a symbol of their close relationship. The blade is single-edged with a double-edged point and was part of the famous Pereshchepina Treasure which most scholars believe corresponds with Kubrat (due to crosses on the sword's facing). If this sword is Kubrat's it would have been sent by Emperor Heraclius as a diplomatic gift sometime from 634-640AD.
all images © The Hermitage Museum, St.Petersburg, Russia; http://www.hermitagemuseum.org/