This Ganza goeth by weight of Byze, and this name of Byza goeth for the accompt of the weight, and commonly a Byza of a Ganza is worth (after our accompt) halfe a ducat, litle more or lesse: and albeit that Gold and siluer is more or lesse in price, yet the Byza neuer changeth: euery Byza maketh a hundreth Ganza of weight, and so the number of the money is Byza.