1789

DSQ



c.1795: ~"8 Reales/Onza" = 128 Reales/Libra = S$ 16. at Cartegena
At the Spanish Onza (0.9243 Ozt), 8 Reales = S$ 1.00 x 16,000 Onza = S$ 16,000.
∴ 128,000 Reales = L.T. 61,200, so 1 Paris Marc cost L.T. 40.70; S$ 8.513

1789: In a 13 Dec 1789 letter to Sir Joseph Banks, the manufactured cost of Platinum (perhaps Sponge) is quoted

"Here I sell an Once of Platinum for 30 Livres Tournois..."  @ L.T. 23.214/£ 1.

Where 1 Paris Once = L.T. 30., 
1 Paris Marc unmanufactured Platinum cost L.T. 240. 
1 Paris Livre unmanufactured Platinum cost L.T. 480.
1 Kilogram unmanufactured Platinum cost L.T. 980.58
1 Spanish Libra unmanufactured Platinum cost L.T. 451.09


London 1789: £1 = 22 Livres Tournois, 16 Sous = L.T. 22.80 and where 1 old Louis d'or (24.025 L.T) = 5.778 Grams; 1 Once = 0.98450520 Ozt, and where the Livre was 0.14 Ozt Fine Ag @ £ 0.04167: L.T. 7.142857 per English Ounce Troy,


1788: 1 Troy Oz. platina (Chocó, legal rate to miners) ~ L.T.
 
1789: 1 Troy Ounce Platinum (Producer, Bulk) = L.T. 30.47216 (avg. £1.269) 
1789: 1 Troy Oz. Platinum (Producer's Ingot, Bulk) = £1.316

1789: 1 Troy Oz. Platinum (Paris: Sponge, Bulk) = US $ 5.3417; £ 1.203

1789: 1 Troy Ounce Platinum (Producer's Ingot, Bulk) = £1.1607 ; USD$5.55
Paris, 1789: £1 = 24 L.T., or Ecu (L.T. 6) = £ 0.25; L.T. 5 = £ 0.2083


1789: ore very expensive in London.








 
30 L.T. per Once is 4.273 Ozt Fine Ag/Ozt., at the bullion-rate:

1789: 1 Troy Oz. Platinum (Paris: Sponge, Bulk) = US $ 5.46; £ 1.23

1789: 1 Troy Ounce Silver (French Coin) = £ 0.29762