1403: 5 Henry 4 c.4: It shall be felony to use the craft of multiplication of gold or silver.

[3 Inst. 74. Rep. by 1 W. & M. st.1.c. 30.]

ITEM it is ordained and stablished, That none from henceforth shall use to multiply gold or silver, nor use the craft of multiplication; and if any the same do, and be thereof attaint, that he incur the pain of felony in this case.

Source: Pickering Statutes at Large volume 2. See also  Statutes of the Realm vol. 2.