AS to the impression, the stamping thereof is the unquestionable prerogative of the crown: for, though divers bishops and monasteries had formerly the privilege of coining money, yet, as sir Matthew Hale observes[b], this was usually done by special grant from the king, or by prescription which supposes one; and therefore was derived from, and not in derogation of, the royal prerogative. Besides that they had only the profit of the coinage, and not the power of instituting either the impression or denomination; but had usually the stamp sent them from the exchequer. [Footnote b: 1 Hist. P.C. 191.] THE denomination, or the value for which the coin is to pass current, is likewise in the breast of the king; and, if any unusual pieces are coined, that value must be ascertained by proclamation. In order to fix the value, the weight, and the fineness of the metal are to be taken into consideration together. When a given weight of gold or silver is of a given fineness, it is then of the true standard, and called sterling metal; a name for which there are various reasons given[c], but none of them entirely satisfactory. And of this sterling metal all the coin of the kingdom must be made by the statute 25 Edw. III. c. 13. So that the king's prerogative seemeth not to extend to the debasing or inhancing the value of the coin, below or above the sterling value[d]: though sir Matthew Hale[e] appears to be of another opinion. The king may also, by his proclamation, legitimate foreign coin, and make it current here; declaring at what value it shall be taken in payments[f]. But this, I apprehend, ought to be by comparison with the standard of our own coin; otherwise the consent of parliament will be necessary. There is at present no such legitimated money; Portugal coin being only current by private consent, so that any one who pleases may refuse to take it in payment. The king may also at any time decry, or cry down, any coin of the kingdom, and make it no longer current[g]. [Footnote c: Spelm. Gloss. 203.] [Footnote d: 2 Inst. 577.] [Footnote e: 1 H.P.C. 194.] [Footnote f: _Ibid._ 197.] [Footnote g: _Ibid._] VI. THE king is, lastly, considered by the laws of England as the head and supreme governor of the national church.