If therefore 4143.38 grains of fine silver, be worth 49 livres 16 sols, 4608 grains (or a marc of fine silver) will be worth 55 livres 6 sols 9 deniers.
Mint price of a marc of fine silver.
But the mint price of fine silver is 51 livres 3 sols 3 deniers.
The difference, therefore, between the mint price of fine silver, and the price of it in the coin, will shew exactly the expence of coinage; consequently there is withheld for the expence of coinage and duty of seignorage (all which deductions and impositions are called le trait des monnoyes) 4 livres 3 sols 6 deniers upon every marc of fine silver. To know how much this makes per cent. state it thus,
51.162[51.162] : 55.38 :: 100 : 108.2.
The price of coinage 8⅕ per cent. upon silver.
So that in France there is 8.2 per cent. deducted upon the coinage of silver, as has been said. Let us next examine the regulations as to the gold.
The marc, as above, is the unit of weight for the gold, and contains, as has been said, 4608 grains, of which 15 grains are allowed to the workmen for the Remede de poids: remains of standard gold in the marc 4593 grains.