Brünn/Brno newspaper advertisement for imported platina & platinum, priced in Austrian Gulden/Loth (17.5 g.) The refined & manufactured price at Paris, circa 1795-8 was the Gold rate; platina must have fallen sharply immediately thereafter.
II Private - News.
Platina merchandise.
Platina in grains may be had for Fl . 6 per Loth, and prepared in sheets for Fl. 9. Where? You may learn at the Intelligence Office.
Late 1800: 1 Troy Ounce platina (Brno, Ore Retail) = Fl. 10.66 (Fr. 28.26)
Late 1800: 1 Troy Oz. Platinum (Brno, Semi-Mfg, Ret.)= Fl. 16. (Fr. 42.39)
Late 1800: 1 Troy Oz. Platinum (Brno, Mfg, Ret.)= Fl. 17.53 (Fr. 46.46)
c.1800: 1 Troy Oz. Platinum (Producer Price, Retail Mfg) = Fr 45.75 - 50.83
September, 1800: II Private - News.
Platina merchandise.
Platina in grains may be had for Fl . 6 per Loth, and prepared in sheets for Fl. 9. Where? You may learn at the Intelligence Office.
Late 1800: 1 Troy Ounce platina (Brno, Ore Retail) = Fl. 10.66 (Fr. 28.26)
Late 1800: 1 Troy Oz. Platinum (Brno, Semi-Mfg, Ret.)= Fl. 16. (Fr. 42.39)
Late 1800: 1 Troy Oz. Platinum (Brno, Mfg, Ret.)= Fl. 17.53 (Fr. 46.46)
c.1800: 1 Troy Oz. Platinum (Producer Price, Retail Mfg) = Fr 45.75 - 50.83
Citation: Patriotisches tageblatt: oder öffentliches correspondenz- und ..., Vol. 1 (1800) p.149
Citation: Handbuch der Naturgeschichte; Johann Friedrich Blumenbach (1802)
** I have a platinum wire thinner than a human hair, and a hammered piece of copper, plated with silver on one side and the other with platinum, and the three different metals together have the thickness of a sheet of paper. I also have a platinum bracteate {disc} well marked by Herr Ingenhouss struck in honor of the Astronomer {Maximilian} Hell.
See Museumsbrief Nr. 21/22 2002/2003, "Gedenkmedaille des Astronomen Maximilian Hell," p.1
Knight (1800) describes the cost of Paris-made Platinum manufactures "at a price equal to that of Gold" ; Necker's refining process (1801?) reportedly economized the labor cost to Fr 24.4 - 30.5 per troy ounce. von Humboldt (1806) almost certainly refers to a retail platina price (82% ore @ Fr 10) so the Paris price of refined & worked Platinum might be estimated conservatively at about half the price of Gold.
At export prices abroad, manufactured Platinum appears to have been sold nearly at the price of Gold (1795-1805), at least until Wollaston's production lowered British prices.
1801-05: 1 Troy Ounce Platinum (mfg) ~ Fr 35. - 43.
Paris Forex, September, 1800:
c.1801:
Friedrich Mohs catalogued the mineral collection of J.F. van der Nüll in 1802. The acquisitions of platina specimens predated his work.
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