Origin of billon
Examples from the Web for billon
The particular coins so designated, were billon or copper, and are described in Lindsay's "Coinage of Scotland," p. 183.The Works of John Knox, Vol. 1 (of 6)|John Knox
The same result could be got by taking the billon money of Florence and calculating from its silver contents.
The gold coins do not so signally fail; it is in the inferior metals, especially the billon and copper, that the difficulty lies.The Confessions of a Collector|William Carew Hazlitt
In this rsum the mention of billon money has been generally avoided, as unduly complicating the subject.