Citation: "The Transport of Platina to Spain in the Late Eighteenth Century" Professor Luis Fermin Capitin Vallvey, PMR (1990) Vol. 43 (1) 31-40
In the “Note of expenses incurred in founding the Royal Platina Plant” payment is recorded of “twenty-seven thousand seventy-two reales which on August 9th, 1788 were released to the proxy representing Bernardo Roca, resident of Guayaquil in payment for 423 libras of platina”(26). This amounts to a price of 64 reales per libra before expenses, but if Bernardo Roca had sold the platina in Lima he could have received double the amount of money!
1788: 1 Troy Oz. platina (Chocó, legal rate to miners) ~ S$ 0.1352
1788: 1 Troy Oz. platina (est. Cartagena mkt) ~ S$ 0.27?
c.1792?: 1 Troy Oz. platina (Cartagena High) ~ S$ 0.81112
There must have been a black market price for the ideal 'fake Gold' metal.
Citation: Étude sur les mines d'or et d'argent de la Colombie; Vicente Restrepo (1908; 1891) p.51
July 18, 1789: Experiments from 1788/9
Where Bordeaux Livre weighed 0.416139793 Kg,
Bordeaux, France (1789): 1 Kg. Coffee = L.T. 2.553 - 2.703 (£ 0.0882 - 0.0934)
Coffee price, retail: £0.0500/cup
Madrid prices: 1 Kilogram Coffee (retail) = £0.0771
At La Guira (1789), Coffee cost S$ 18 the quintal (~46.0 Kgs), superior in a third to that of the Cocoa (S$ 13.5 the fanega/~50.613 Kgs)
La Guira, New Spain (1789): 1 Kg. Coffee = S$ 0.3913; 1 Kg. Cocoa = S$ 0.26673