April 1826: 1 Troy Ounce platina (ore @ Choco) = Thlr. 0.9014
1826: 1 Troy Ounce Platinum (refined) = Thlr 14.88 - 13.82 (USD$ 11.33 - 10.50)
1826: a < 2 gram weight set in Platinum, 1 Thaler ~ Thlr 15./oz (USD$ 11.50)
1826: Platinum Spoon w/ handle, 2 Thaler/ Fl. 2.88
1826: 1 Troy Ounce Platinum (refined) = Thlr 14.88 - 13.82 (USD$ 11.33 - 10.50)
1826: a < 2 gram weight set in Platinum, 1 Thaler ~ Thlr 15./oz (USD$ 11.50)
1826: Platinum Spoon w/ handle, 2 Thaler/ Fl. 2.88
Where the 1 Unze - 0.10 Gran Set cost 2.5 Thaler and the (Platinum) 1 Gran - 0.10 Gran Set cost 1 Thaler, therefore the 1 Unze - 1 Gran Set cost 1.5 Thaler in 1826. In 1820, where Fl. 1.25 = Thlr 0.625
The Gran weighed 62.1652 Mgs, 5 Weights at 2.1 Gran (0.130464 Grams)
1826: 1 Troy Ounce Platinum (Mfg, Retail) ~ Thlr 238.40
June 1826:
10. Verkaufsanzeigen
1) Der Preis der Platingewichte von 1 Gran und den Unterabtheilungen desselben, welche ich, nach Anrathen des Herrn Hofrath Brandes, zum Gebrauch für die Receptur verfertige, ist 1 Thaler- Uebrigens verfertige ich jetzt die ganzen Medicinalgewichte genau, und zwar justify ich sie nach dem französischen Gramme-Gewicht, nach dem vom Hofrath Meier angegebenen Verhältniß. Ein Gewicht von 1 Pfunde bis 0.10 Gran, die kleinen Gewichtstheile von Platin, das Ganze in einem Kasten, tostet 1 Louis-d'or; dieselben Gewichte von , 1 Unze bis 0.10 Gran, auch in einen Kasten, die kleinen Gewichte von Platin, kosten 2.5 Thaler. Göttingen, Apel, Universitäts-Mechanikus
10. Classified ads
1) The price of Platinum weights of 1 Gran and the subdivisions thereof, made under advisment of Lord Councillor Brandes for use by the Receptor, is 1 Thaler. - By the way, I now make the whole Medicinal weights exactly, although I rectify it by the French Gramme-weight according to correspondence given by Councillor Meier. A weight of 1 Pfund to 0.10 Gran, the small weight parts of platinum, the whole thing in a box costs , 1 Louis d'Or ; same weights of 1 Unze by 0.10 Gran, even in a box , the lighter weights in Platinum, cost 2.5 Thaler.
{Signed} Apel, University mechanic of Göttingen (Hannover)
Citation: Archiv des Apotheker-Vereins im Nördlichen Teutschland für die ..., Volume 17; Apotheker-Verein im Nördlichen Deutschland (1826)
July, 1826:
Citation: Allgemeine Handlungs-Zeitung: mit den neuesten Erfindungen..., Vol. 33 p.286
Random used Platinumware, resale; unknown weight
In Bavaria, the intended Colombian Platinum coinage rate of S$6./Unza was made known by Late November, 1826.
1826: 1 Troy Oz. Pt (Colombian Declaration) ~Rthlr 8.6317
1826: 1 Troy Oz. Pt (Colombian Declaration) ~Rthlr 8.6317
Where 1 Preuss. Thaler = Fl 1.7208 - 1.7333 and 1 Loth = 0.4701568 Ozt.,
1826: 1 Troy Oz. Pt (Paris Mkt, Retail) = Pr. Thlr 14.89-13.83
....(Fl. 25.62-23.85),
Dr. Hermstadt's "Artificial Gold" and Cooper's "Mock Gold" c.1825?
Where the Specific Gravity (in 1825) of Platinum was assumed 21.5, copper 8.9, Zinc 7., the ratio of Hermstadt's "Artificial Gold" should be 17.22, or nearly the same SG as a Gold Sovereign. A slightly more precise ratio would be 831 Pt, 151 Cu, 18 Zn, where SG = 17.185
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