Assuming the Kilogram 32.68387 Paris Onces,
Pd.M. Rate is Fr.64.- 80. ; Kg Rate is Fr. 130.-165.
c.1817: 1 Troy Oz. platina (Common Ore, Paris Spot) = Fr 5. (£ )
Citation: Nouveau dictionnaire d'histoire naturelle..., Vol. 26 (1818) p.583
Possibly Late 1816 news, reported by C.L. Cadet.
c. February, 1817:
Citation: Journal de pharmacie et des sciences accessoires, No.3, March 1817 p.242
c. March, 1817:
March, 1817: 1 Troy Ounce Platinum (refined) = Fr 13.76 (£ 0.554)
March, 1817: 1 Troy Oz. Platinum (semi-mfg) = Fr 14.74 (£ 0.593)
March, 1817: 1 Troy Oz. Platinum (assembly) ~ Fr 2.54 (£ 0.102)
March, 1817: 1 Troy Oz. Platinum (fully mfg still) = Fr 18.29 (£ 0.7360)
1817: 20 Kilograms Platinum Ingot > 15.5 Kilogram Platinum Still of 162 Litres
Citation: Bulletin de la Societe D'Encourgement Pour L'Industrie Nationale (1817) p.68
March 1817: reporting, with errors!
April, 1817: 1 Troy Oz. Platinum (Refined) = Fr 13.76 (£ 0.5651)
April, 1817: 1 Troy Oz. Platinum (Semi-Mfg) = Fr 14.74 (£ 0.6053)
April, 1817: 1 Troy Oz. Platinum (Assembly) ~ Fr 2.54 (£ 0.102)
April, 1817: 1 Troy Oz. Platinum (Fully Mfg Still) = Fr 17.28 (£ 0.7097)
(Apparently written with great detail & expansive knowledge, after 1815 and the Mint's acquisition of the famous 1816 Jeanetty boiler.)
Platina grains were sold by the lot, sorted and sight-graded by size and apparent purity; no reference to specific gravity. This Paris Price was 33% - 54% higher than Wollaston's cost, suggesting a trade rate.
c.1818?: 1 Troy Ounce platina (Paris, trade) = Fr 4.06 - 5.08 (USD$ 0.93)
Citation: Nouveau dictionnaire d'histoire naturelle, appliquée aux arts..., Vol. 26; Charles S. Sonnini (1818)
The key was to simplify the processing and it is this simplification, it is above all the company made more than had great yet been done, which determined a reduction by half in the price of platinum, for the ore has increased rather.
One can hardly boast of a further decline before a very great abundance of ore and considerable demands require to deal with at once larger quantities, and your Committee believes that the price of Fr. 15 - 18. an ounce, which is now reduced, making it accessible to many manufacturers. In this respect, MM. Cuoq and Couturier have done a great service to the arts, they would make even more if they could lower their prices.
You, gentlemen, on many occasions, encouraged Mr. Jannety, you constantly applauded his success, and you are always willing to assist his efforts and perseverance in working platinum.
July 16, 1817: Albert Gallatin recommends a Platinum metre manufactured by Fortin for the cost of £ 105. The Platinum metre received was 125 cm3 (5 mm * 25 mm * 1,000 mm)
at a presumed density of 20.5487 (c.1873: noting the arsenical alloy) a total weight of ~ 2.57 Kgs or 82.58 Ozt. for the French Unit.
July, 1817: 1 Troy Oz. Platinum (Paris: Mfg) ~ £ 1.2715 (Fr. 30.963)
March, 1818: 1 Troy Oz. Platinum-Clad Copper (Semi-Mfg) = Fr 2.86
1817: Bréant of Paris produced a Platinum still of 162-litres weighing 15.5 kg for Cuoq & Couturier's 1816/7, the weight per Litre was 3.076 Troy Ounces; the amount of Litres contained per Troy Ounce was 0.3251 Litres.
Pd.M. Rate is Fr.64.- 80. ; Kg Rate is Fr. 130.-165.
c.1817: 1 Troy Oz. platina (Common Ore, Paris Spot) = Fr 5. (£ )
Citation: Nouveau dictionnaire d'histoire naturelle..., Vol. 26 (1818) p.583
Possibly Late 1816 news, reported by C.L. Cadet.
c. February, 1817:
Citation: Journal de pharmacie et des sciences accessoires, No.3, March 1817 p.242
c. March, 1817:
March, 1817: 1 Troy Ounce Platinum (refined) = Fr 13.76 (£ 0.554)
March, 1817: 1 Troy Oz. Platinum (semi-mfg) = Fr 14.74 (£ 0.593)
March, 1817: 1 Troy Oz. Platinum (assembly) ~ Fr 2.54 (£ 0.102)
March, 1817: 1 Troy Oz. Platinum (fully mfg still) = Fr 18.29 (£ 0.7360)
1817: 20 Kilograms Platinum Ingot > 15.5 Kilogram Platinum Still of 162 Litres
Citation: Bulletin de la Societe D'Encourgement Pour L'Industrie Nationale (1817) p.68
March 1817: reporting, with errors!
April, 1817: 1 Troy Oz. Platinum (Refined) = Fr 13.76 (£ 0.5651)
April, 1817: 1 Troy Oz. Platinum (Semi-Mfg) = Fr 14.74 (£ 0.6053)
April, 1817: 1 Troy Oz. Platinum (Assembly) ~ Fr 2.54 (£ 0.102)
April, 1817: 1 Troy Oz. Platinum (Fully Mfg Still) = Fr 17.28 (£ 0.7097)
(Apparently written with great detail & expansive knowledge, after 1815 and the Mint's acquisition of the famous 1816 Jeanetty boiler.)
Platina grains were sold by the lot, sorted and sight-graded by size and apparent purity; no reference to specific gravity. This Paris Price was 33% - 54% higher than Wollaston's cost, suggesting a trade rate.
c.1818?: 1 Troy Ounce platina (Paris, trade) = Fr 4.06 - 5.08 (USD$ 0.93)
Citation: Nouveau dictionnaire d'histoire naturelle, appliquée aux arts..., Vol. 26; Charles S. Sonnini (1818)
The key was to simplify the processing and it is this simplification, it is above all the company made more than had great yet been done, which determined a reduction by half in the price of platinum, for the ore has increased rather.
One can hardly boast of a further decline before a very great abundance of ore and considerable demands require to deal with at once larger quantities, and your Committee believes that the price of Fr. 15 - 18. an ounce, which is now reduced, making it accessible to many manufacturers. In this respect, MM. Cuoq and Couturier have done a great service to the arts, they would make even more if they could lower their prices.
You, gentlemen, on many occasions, encouraged Mr. Jannety, you constantly applauded his success, and you are always willing to assist his efforts and perseverance in working platinum.
July 16, 1817: Albert Gallatin recommends a Platinum metre manufactured by Fortin for the cost of £ 105. The Platinum metre received was 125 cm3 (5 mm * 25 mm * 1,000 mm)
at a presumed density of 20.5487 (c.1873: noting the arsenical alloy) a total weight of ~ 2.57 Kgs or 82.58 Ozt. for the French Unit.
July, 1817: 1 Troy Oz. Platinum (Paris: Mfg) ~ £ 1.2715 (Fr. 30.963)
March, 1818: 1 Troy Oz. Platinum-Clad Copper (Semi-Mfg) = Fr 2.86
1817: Bréant of Paris produced a Platinum still of 162-litres weighing 15.5 kg for Cuoq & Couturier's 1816/7, the weight per Litre was 3.076 Troy Ounces; the amount of Litres contained per Troy Ounce was 0.3251 Litres.
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