1869: 1 Troy Ounce Platinum (Paris Mfg, Bulk) = Fr 23.33 (USD$ 4.60)
Citation: Le Moniteur scientifique du Doctor Quesneville: Journal ..., Vol. 39-40 G. A. Quesneville, p.664
c.1869: 1 Troy Oz. Platinum (Paris: Mkt, Retail) ~ Fr 31.103 (USD$ 6.13)
Citation: Les pierres précieuses et les principaux ornements; Jean Pierre Rambosson (1870) p.213
The Price of Ingot Platinum was falling in the late 1860s, undercut in part by the Russians selling directly to the global market.
Citation: Le Moniteur scientifique du Doctor Quesneville: Journal ..., Vol. 39-40 G. A. Quesneville, p.664
c.1869: 1 Troy Oz. Platinum (Paris: Mkt, Retail) ~ Fr 31.103 (USD$ 6.13)
Citation: Les pierres précieuses et les principaux ornements; Jean Pierre Rambosson (1870) p.213
The Price of Ingot Platinum was falling in the late 1860s, undercut in part by the Russians selling directly to the global market.
1865: 1 Troy Ounce Platinum (manufactured) Fr 32.66 (USD$ 6.35)
French Dental Platinum alloy (10% - 12.5% Pt) suggested as source for metal in counterfeit Gold coins.
Where the Specific Gravity of 18k Gold is assumed 14.91 - 15.5, the Alloy must be Pt 69%, 19% Cu, 12% Sn then gilt with pure Gold (12% the total weight) = Specific Gravity of 14.91
Citation: Catalogue of the Collection of Metallurgical Specimens Formed by the Late John Percy, Now in the South Kensington Museum (1892) p.232
Platinized mirrors:
Platinum Still (917.84 Ozt Platinum) cost Fr. 50,000. (delivered?)
1869: 1 Troy Oz. Platinum (Mfg, Bulk) Fr 54.47 (USD$ )
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