In the early Komnenian period, the hyperpyron was the equivalent of three electrum trachea, 48 billon trachea or 864 copper tetartera, although with the debasement of the trachea it eventually came to rate 12 electrum trachea and 288 to 384 billon trachea.[6] In the 14th century, the hyperpyron equalled 12 of the new silver basilika, 96 tournesia, 384 copper trachea and 768 copper assaria.[7]