On Platina.: France 1847: Paris Chemist Catalogue

October 1847: Quesneville, successor to Nicolas Louis Vauquelin's Catalogue (?)

Citation: Revue scientifique et industrielle, Vol. 31 (10/1847) p.149

1847: 1 Troy Ounce platina (Ore 75%, Retail) = Fr 24.88 (USD$ 4.75)
1847: 1 Troy Oz. Pt (Ore @.999, Ret.) = Fr 33.18 (USD$ 6.34)
1847: 1 Troy Oz. Platinum (Sponge, Refined, Ret.) = Fr 37.32 (USD$ 7.13)
1847: 1 Troy Oz. Platinum (Semi-Mfg, Ret.) = Fr Fr 37.32 (USD$ 7.13)

1847: 1 Troy Oz. Platinum-Black (Residue, Ret.) = Fr 6.22 (USD$ 1.19)

1847: 1 Troy Oz. Palladium (Refined, Retail) = Fr 124.41 (USD$ 23.75)

1847: 1 Troy Oz. Iridium (Ore?, Retail) = Fr 31.103 (USD$ 5.94)
1847: 1 Troy Oz. Osmiridium (Ore, Retail) = Fr 46.66 (USD$ 8.91)

1847: 1 Troy Oz. Platinum Chloride (PtCl₂, Ret.) = Fr 31.103 (USD$ 5.94)

1847: 1 Troy Oz. Platinum Oxide (PtO2, Ret.) = Fr. 37.32 (USD$ 7.13)

Prices fell by a third, from this 1846 catalogue.

1847: 1 Troy Oz. Platinum (Mfg, Bulk) = Fr 30.72 (USD$ 5.72)

1847: 1 Troy Oz. platina (Ore, Ret.) = Fr 24.88 (USD$ 4.75)

1847: 1 Troy Oz. Platinum (Sponge, Refined) = Fr 37.32 (USD$ 7.13)

1847: 1 Troy Oz. Platinum (Semi-Mfg) = Fr 37.32 (USD$ 7.13)

1847: 1 Troy Oz. Palladium (Refined) = Fr 124.40 (USD$ 23.75)

1847: 1 Troy Oz. Iridium (Refined) = Fr 93.30 (USD$ 17.82)

Citation: Revue scientifique et industrielle, Vol. 27 (1847) p.129

Citation: Catalogue des livres francais, grecs, latins, allemand, anglais, espagnols ; Hector Bossange (1847)

c.1847/8: (Paul et Gabriel) Rousseau Frères

1847: 1 Troy Oz. Platinum Chloride (PtCl₂, Ret.) = Fr 31.103 (USD$ 5.94)

1847: 1 Troy Oz. Pt-Ir Sponge (Sponge, Ret.) = Fr 34.214 (USD$ 6.53)

Citation: Chimie élémentaire avec ses principales applications aux arts; Apollinaire Bouchardat (1848) pp 595-

1921: "Mousse de platine" was unpurified Platinum-Iridium Sponge.

1847: 1 Troy Ounce platina (in Russia) = Fr 10.68 (USD$ 2.04)

1847: 1 Troy Oz. Platinum (High Grade Scrap?) = Fr 34.99 (USD$ 6.68)

Citation: Journal des économistes, Vol. 33, By Société de statistique de Paris (1852) p.122

c. 1847: 1 Troy Ounce Platinum (Mfg) = Fr 30.72 (USD$ 5.86)

c. 1848: 1 Troy Ounce Platinum (Semi-Mfg, Retail) = Fr 37.32 (USD$ 7.13)

Although the still indicated here is much larger, the price per Troy Ounce was about the same as in 1832. This price persistence & stability may have been due to certain governmental decrees and regulations, which effectively fixed a floor.

Worked Platinum was often indicated at 1,000 Fr./kg.; likewise, it's perhaps not coincidental that the "80,000 Francs" price for a Platinum still was repeated as late as 1889 (unlikely as an actual cost, given Platinum's spectacular rise after 1874.)

Citation: Précis de chimie industrielle à l'usage des écoles préparatoires aux ... Anselme, M. Payen (1849) p.98.

1848: 1 Troy Ounce Platinum (Intrinsic) = Fr 24.88 (USD$ 4.75)

Citation: Annalen der Physik und Chemie, Vol. 2; Vols. 73-74 (No. 6; 1848) p.320

1845: 1 Troy Oz. Platinum (semi-mfg., retail) = Fr. 40.43 - 46.65 (USD$ 7.99 - 9.)

Citation: Maison centrale de droguerie: prix courant général 1845, p. 50

Although neither edition quoted Platinum by the gram, the Bossange catalog had the same prices for Grove batteries in 1845 and 1847. This suggests a stable retail price.

Citation: Catalogue générale de Hector Bossange (1845) p.55