Germany, 1850: Price List

1849: 1 Troy Oz. Platinum (German Ask: Scrap) = Thlr 9.05 ; Fl. 13.57   

Where the Pfund = 32 Loths = 7,680 Gran (467.74 Grams; 15.04 Troy Ounces.) The Mark Pfund = 15.03 Troy Ounces and the Gulden/Florin was worth USD$ 0.395, Gold was 5x Platinum, which was ~ 3x more than Silver.

Incidentally, this was a common price expression as late as the 1870s. Platinum prices were certainly less stable than this republished price implies.

c.1862

1858:

1856:

 

Apparently, a simple translation and not actual market price.
 
1849: 1 Troy Oz. Platinum ('avg price' some years?) = Thlr 8.73 (USD$ 5.96)

c.1850:

Citation:Elemente der Electro-Metallurgie: Deutsch bearbeitet nach der 3ter engl ... Alfred Smee (1851) p.218