1777

DSQ
Edward Milne's 12 Silver Camp cups for Gen.Washington were fashioned from 16 Spanish Dollars weighing 13.9 Ozt. (13 Ozt 18 dwt) ; Spanish Dollar weighed 0.86875 Ozt. 

Milne credited Washington 1.75 Ozt. (1 Ozt 15 dwt) or 

August 1777: 1 Troy Ounce Silver (Spanish Coin @ Phila.) = P£ 1.0 
August 1777: 1 Troy Oz. Silver (Coin: Intrinsic @ Phila.) = P£ 1.10

In 1717, Newton recorded the full-weight Spanish Dollar weighed 418 Grains (.87083 Ozt) @
4s. 6d. = £ 0.2250

The Mexican Dollar of 1765 weighed 0.86771 Ozt of 0.785416667 Fine Ag: = £ 0.2498

In 1777, the English Mint recognized this coin @ 5s.

1765: 1 Troy Oz.Silver (Spanish Coin) = S$ 1.00
1765: 1 Troy Oz. Silver (Coin: Intrinsic) = S$ 1.2732
1777: 1 Troy Oz. Silver (UK Mint Value: Span. Coin, Intrinsic) = £ 0.3180
 



The Spanish American Dollar of 1777 weighed 0.86042 Ozt of 0.772654 Fine Ag: = £ 0.2539

1777: 1 Troy Oz. Silver (Span Amer Coin) = S$ 1.00
1777: 1 Troy Oz. Silver (Span. Coin: Intrinsic) = S$ 1.2942
1777: 1 Troy Oz. Silver (UK Mint Value: Span. Coin, Intrinsic) = £ 0.3286 
 


John McCusker's How much is that in real money? Table C-1 erroneously assumes '4s. 6d.' per S$1., w/depreciation of Pennsylvania Money "300%"

The cost for workmanship was P£ 0.7636/Ozt (=£ 0.2281)


Given the corrected coin weights/assays, the (Pennsylvanian) £ was depreciated 334.781% 

1777: 1 Troy Oz. Silver (UK Mint Value: Span. Coin, Intrinsic) = £ 0.3286 
August 1777: 1 Troy Oz. Silver (Span. Coin: Intrinsic @ Phila.) = P£ 1.10
August 1777: 1 Troy Oz. Fine Ag Labor = £ 0.2281 / S$ 1.1628
 

1784

197 Coins 
170 Coins = 37.65 Ozt @ £ 3.875

1792

USA:
1792: MA£ 1. = $3.33 ; $1. = MA£ 0.30



 
Russia:
1792: £ 1. = руб Acc. 8.2758 ; £ 0.1208 = руб Acc. 1.



1792: £ 1. = руб Acc. 10.3672 ; £ 0.0965 = руб Acc. 1.


1792: £ 1. = руб Acc. 8.205 ; £ 0.1219 = руб Acc. 1.

1791

USA:
 


c.1801, Dated Reference



Copying Gutherie (c.1780?) with inaccurate forex

Citation: New System of Modern Geography, Or, A Geographical, Historical &c..., Vol. 1; William Guthrie (1793)






Russia:
1791: £ 1. = руб Acc. 8.1356 ; £ 0.1229 = руб Acc. 1.



1791: £ 1. = руб Acc. 8.8073 ; £ 0.1135 = руб Acc. 1.


1791: £ 1. = руб Acc. 8.205 ; £ 0.1219 = руб Acc. 1.

1797

London:

S$ 1. =  £ 0.2375









USA:




c. 1797: USD $1. = 0.853645835 Ozt; 0.9166667 Fine = 0.78250868 Ozt Fine Ag



1797: $1. = Ma£ 0.30 ; Ma£ 1. = $3.33



  
1797: 1 Troy Oz. Silver (US Coin .999 Ag) = $ 1.293

For Elias Derby, Paul Revere's 12 Tumblers weighed 41.55 Ozt and cost Ma£ 14.8875: 

1797: 1 Troy Oz. Silverware (Total Mfg: Cup) = Ma£ 0.3583 (USD$ 1.1943)
1797: 1 Troy Oz. Silverware (Mfg) = Ma£ 0.2599
1797: 1 Troy Oz. Silverware (Cyphering?) = Ma£ 0.0984

1797: 1 Troy Oz. Silverware (Premium Cost, .891) ~ Ma£ 0.7039 (USD$ 2.3464)
1797: 1 Troy Oz. Silver (Premium, .999) ~ Ma£ 0.7900 (USD$ 2.6335)

 

Russia:

1798

USA:

c. 1798: Average Weight? $1. = 0.866666665









New York: DuBois calculated the Dollar at NY£ 0.40 ; in 1798 T.D. DuBois charged Lemuel Wells NY£ 2.40 for 12 Tablespoons and NY£ 2.40 for 24 Teaspoons.  The spoon unit price was clearly the same by half, but differed by weight (Ozt.)

Where a 14.6 cm Teaspoon weighed ~0.55 Ozt, a dozen weighed ~6 Ozt.

Where a 23.20 cm DuBois Tablespoon weighed 1.9 Ozt., a dozen weighed 22.8 Ozt.

At assumed weight, workmanship on tablespoons was NY£ 0.1053/Ozt (=$ 0.2631)
At assumed weight, workmanship on teaspoons was NY£ 0.1818/Ozt (=$ 0.4545)

 
Spain:

S$ 1. = £0.15






c.1798: 
L.T. 1 = S$ 0.2797 ; S$ 1. = 3.5745



Russia:

руб Acc. 1. = £0.10



High estimation, dubious.
руб Ag 1. = £0.1625
руб Acc 1. = £0.1186
 
 


 руб Ag 1. = L.T. 3.75 ; L.T. 1 = руб Ag 0.267
 руб Acc. 1. = L.T. 2.74 ; L.T. 1 = руб Acc. 0.365


 
руб Acc. 1. = руб Ag 0.73
руб Ag 1. = руб Acc 1.37
 
 


Italy:












1818:

1799

UK:

See Tables for London Gold/Silver c.1749-1811, from An account of the market prices of standard gold in bars; foreign (i.e. Portugal) gold in coin; standard silver in bars; and Spanish dollars, or pillar pieces of eight: with the courses of exchange with Hamburg, Lisbon, and Paris: from the 3d of Jan. 1718, to the 3d of Dec. 1736; and from the 3d of Jan. 1746, to the 1st of March 1811 inclusive: extracted from Castaing's and Lloyd's lists 

http://nla.gov.au/nla.obj-266761838/view?partId=nla.obj-266765288#page/n24/mode/1up

Where the Price of (New) Silver Dollars is stated at £ 0.2792/Ozt. (December 1799), 

$1. (0.838063 Ozt) = £ 0.2340 ;  4 s. 8d.


USA:




France:


 
Spain:



1799: 

Where 103.125 Marcs = 742.8223 Ozt Fine Ag, thus S$ 1. = 0.748223 Ozt Fine Ag, and assuming the Fineness @ o.89583333, the Gross Weight (115.1163 Marcs = 829.197 Ozt) corresponds to S$ 1. = 0.82919695 Ozt : just 30.15 Troy Grains light on 1,000 Dollars.

Citation: Manuel général pour les arbitrages de Changes, &c. (1800)







Germany:







Austria:


Russia:

1799 Rouble (Low): 1 руб Acc = £0.10


1799 Rouble: 1 руб Ag = £0.11916

1811

UK:
  












1760-1829: Merchant Bills




London:

S$ 1. =  £ 0.2750
£ 1. = S$ 3.64
£ 1. = Fr 17.16





UK:


France:

9/30/1811: S$1. = Fr 5.28
 


 

USA: 



USD$1. = Fr. 4.05 (Merchant Rate, War-time)






New York: On August 12, 1811, T.D. DuBois charged Marquand &Pauling USD$ 97.64 for 83.70 Ozt of Standard/Spanish Silver and $28 for 144 Spoons. Where 1 Tablespoon @ 1.72 Ozt cost $0.1944 for workmanship, the difference between 1798 Retail and 1811 Wholesale is evident.


The S$ . assumed at 0.7801 Ozt Fine Ag, and assuming S$ 98. for USD$ 97.64 (Junk Pesos, average 0.85408 Ozt per $1.) ~ -1.21% underweight and appropriate as scrap, the Market value of a full-weight Spanish Dollar should be in excess of US$ 1.0086 per coin.


August 1811: 1 Troy Ounce Silver (Spanish Coin @ NYC) = USD$ 1.1665
August 1811: 1 Troy Oz. Silverware (Alloy: Whols @ NYC) = USD$ 1.3610
1811: 1 Troy Oz. Fine Silver (Mfg., Whols @ NYC) = USD$ 1.75

Assumed Par being S$ 1. = US (Ag Coin) $ 1.0086, the August 1811 wholesale cost for ~2.5 Kgs of Coin Silver likely included a small (unknown) Premium.

c. 1811/2:
 
Germany:
c.1811:



Russia:

1811: 1 руб Banco = Fr. 0.8775