France, 1855

1856: 1 Troy Oz. Platinum (Paris: Semi-Mfg, Retail) = Fr  32.66 (USD$ 6.35)
1856: 1 Ozt. Platinumware Mfg (Retail) = Fr 4.80 (USD$ 0.93)
 
L. Barre's summary of laboratory costs c. 1855, equipment presumably purchased from Paris, bulk/discount. 

1855: 1 Troy Oz. Platinum (Paris: Mfg Basin, Retail) = Fr 37.46 (USD$ 7.31)
1855: 1 Ozt. Platinum (Paris: Mfg Crucible, Retail) = Fr 39.10 (USD$ 7.63) 
1855: 1 Ozt. Platinum (Paris: Mfg Spatula, Retail) = Fr 41.47 (USD$ 8.09) 
 
Citation: Bulletin de la Société de l'industrie minérale, Saint-Étienne, Vol.1 1855-6 p.224 

 











Chapuis Frères , 1855:




French Platinum manufacturers/industry, 1855:





















The price of Platinum trocars was stable for decades. 

c.1855, Maison Charrière


 
c.1857, L. Mathieu, fabricant d'instruments de chirurgie 


c.1866, L. Mathieu, fabricant d'instruments de chirurgie




1855: 1 Troy Oz. platina (Paris: Ore Retail) = Fr 31.10 (USD$ 6.06)
1855: 1 Ozt. Iridosmine (Paris: Ore Ret.) = Fr 124.41 (USD$ 24.23)

Citation: Cours de géologie agricole théorique et pratique;  Nérée Boubée (1852; 1855)





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