Sardinia Scudo or crown, (§ and † in prop.)

Saxony Rixdollar, Convention, (and in prop.) W. 1

Dollar (1802)

United

States

Livornina (1723)

Pezza della rosa (1726)

Francescone (1738) in proportion

Leopoldone (1790)

Piece of 10 paoli of the kingdom of
Etruria (1801)

Scudo Pisa of ditto (1803)

Piece of 10 lire of ditto (1803)
Ditto of 5 lire ditto (1803)
Lira (1803)

}Dollar (1795) ; &c. in proportion

Dollar, an average of eight years

W.0 4 17 134 17 5 18 238, 9

W.0 2 17 12 17
B. 0 7 25 626

W.0 3 17 10417 4
W.0 2 16 17
W.0 2 17 13

13 381, 7

4 5,30

16 14

2 368, 2

4

3,41

17

9

14 386, 4

4 5,95

W.0 4 17 15

17

fw.o

8

4 385, O

1 12 578, 7

16 16 1 19 1 18 14 39, 5 W.0 7 0 21 0 21 0 19, 5 20 420 15 8 458, 2 B. 0 5 17 12 17 22 W.1 5 14 6 12 15 8 280, 8 W.6 8 4 183 2 0 10 44, 9 W.1 3 18 10 16 12 16 367, B. 0 4 6 6 6 9 16 142, 3 W. 1 4 18 10 16 10 16 365, 2 4 2,99 W.8 45 19 1 12 2 33, 4 W.8 3 2 21 0 18 7 16, 9 5 13 1 11 8 32, 3 1 0 18 8 17, 5 561 1 8 19 30 5 0

0370, 1

4 3,68

5,71

0 2,72

5

3,98

8 398, 1

4 6,47

3 3,21

0 6,26

1 4 3,26

1

7,87

0 4,66

0 2,35

0 4,58

0 2,44

4 25

In order to show the principles on which the foregoing tables are calculated, it may be proper first to explain the manner by which the value of any coin may be determined when its weight and fineness are known. For this purpose the quantity of standard gold and silver contained in it must be first found; and then its sterling value may be ascertained from the Mint-price of the standard ounce.

GOLD COINS-What is the sterling value of a French Double Louis d'or, the Report (per table, page 131,) being as follows:-weight 9 dwt. 20 gr. Assay W. 14 gr. that is, 0 car. 14 gr. worse than English standard?

The foregoing calculations may be considerably abridged by using a constant decimal as a multiplier. The following is a general rule for gold coins.

Multiply the carat grains in the fineness by the troy grains in the weight, and again multiply this product by 92182; cut off nine decimals, which will give the answer in pounds and decimals of a pound sterling.

Or, the contents in pure gold may be found by multiplying the standard weight by 11, and dividing by 12; and standard gold may be reduced to pure by reversing this operation.

SILVER COINS.-What is the value of a Spanish Dollar, the Report (per table, page 133,) being as follows:-weight, 17 dwt. 8 gr. Assay W. 8 dwt. that is, O oz. 8 dwt. worse than English standard?

oz. dwt.

0

From 11 2 the fineness of standard silver,

Subtract 08

01

VOL. VI.

L

RULE FOR SILVER COINS-Multiply the carat grains in the fineness by the troy grains in the weight, and again multiply this product by 5818; cut of seven decimals, which will give the answer in pence and decimals of a penny sterling.

Thus, in the foregoing question of the Spanish Dollar,

Or the contents in pure silver may be found by multiplying the standard weight by 37, and dividing by 40; and, on the contrary, multiplying the contents in pure silver by 40, and dividing by 37, will give the standard weight.

The precious metals in England are mostly bought and sold at so much per ounce standard. It therefore becomes necessary to determine the standard weight; and this must be calculated from the Assay Master's Report of weight and fineness.

But it may be useful first to explain the characters which are generally used in these Reports.

The common method of finding the value of small quantities of gold and silver is by alloying, from the Assay Master's Report, at the rate of 4s. per carat, better or worse, in every ounce weight of gold; and at the rate of 6d. per ounce, better or worse, in every ounce weight of silver. But when silver is more than 10 dwt, worse, an allowance of 2d. per ounce must be made for refining.