On Platina.: France, 1875

Where the cost of refining was presumably ~Fr. 24./kg, 1 kg Pt = Fr. 1,094. - Fr 1,360

1875: 1 Troy Ounce platina (Paris, Retail) = Fr. 24.88
1875: 1 Troy Oz platina (Paris, Ret.) = Fr. 31.10

1875: 1 Troy Oz Pt (Paris: Intrinsic) = Fr. 33.265 - 41.582
1875: 1 Troy Oz Pt (Paris: Small Producer Cost) = Fr. 34.01 - 42.33
1875: 1 Troy Oz Pt (Paris: Small Producer Mfg) = Fr. 35.93 - 44.25

Per Kg: Fr 1,000 > Fr 938.35 > Fr 914.24 > Fr 683.85 > ~ Fr 445. - 513.

1875: 1 Troy Oz Platinum (Paris: Mfg, Bulk) = Fr. 31.10
1875: 1 Troy Oz Platinum (Paris Net Mfg) = Fr. 29.19
1875: 1 Troy Oz platina (Paris: Intrinsic) = Fr. 28.44
1875: 1 Troy Oz platina (Paris: Ore: break-even) = Fr. 21.27
1875: 1 Troy Oz platina (Paris: Ore, Bulk) ~ Fr. 21.27

Citation: Bulletin de statistique et de législation comparée, Vol. 56 p.645

The Platinum Still which cost Fr 41,000 in 1872 cost Fr 50,000 in 1875: the reported price had risen 21.95% in three years.

Citation: Bulletin de la Société chimique de Paris, Annee 1876: 1er Semestre Tome XXV, p.

1875: 1 Troy Oz Platinum (Paris: Intrinsic, Bulk) = Fr. 31.10

Citation: Le Moniteur scientifique du Doctor Quesneville: Journal ..., Vol. 39-40 G. A. Quesneville, p.664

1875: 1 Troy Ounce Platino-Iridium (Unique) = Fr. 101.98
1875: 1 Troy Oz. Platinum (Unique) = Fr. 90
1875: 1 Troy Oz. Iridium (Unique) = Fr. 200

Where the assumed intrinsic value of Gold-plated "Platinum" counterfeit FF 20 (0.1866 Ozt Fine Au) was ~Fr. 4. with 5.26 g Fine Platinum (Counterfeit Alloy: 81.5% Pt, 18.5% Cu with a Specific Gravity of 17.3 matches the Napoleon) actual Platinum cost delivered is unknown.

1874/5?: 1 Troy Oz Platinum (Paris: Intrinsic, Scrap?) ~ Fr. 23.66

Citation: Documents Rélatifs À la Question Monétaire Recueillis Et Publiés en Fascicules (1877) 1/20/1876

In this way, on a large scale, and or over 6 years (since before 1870), Isabellines, Napoleons, Sovereigns have manufactured in Spain. A certain quantity of these coins was introduced to France by both trade borders by Carlist refugees. Back in 1870, one of us had the opportunity to review a collection of these fake currencies. A new collection has been exhibited in the conference of 1876, and we've seen that the forgers had made very considerable progress and were clean their latest products to deceive the public.
[...]
Manufacturing centers are mainly Valencia and Barcelona. The workshops are equipped with hydraulic presses with which were stamped noiselessly "blanks" of platinum. One workshop in Barcelona would have provided for a million and a half of counterfeit currency; another would work in much larger proportions. The workshops were very well equipted and serviced by qualified mechanics and engravers. The sheets are produced in various parts of Europe by industrialists whose address was communicated; these sheets, according to the witness, were all 25 cm long, 8.5 cm wide and 0.3 cm thick.

Alloy: 95% Pt, 5% Cu

Citation: Accounts and Papers of the House of Commons; Great Britain. Parliament. House of Commons (1877) p.31

BELGIUM:

1875: 1 Troy Oz. Platinum (London: Intrinsic) = Fr 32.66

In reply, (to Ignatz Sroof, Direcrtor of the Griesheim Works near Hoechst/Frankfurt, Bavaria) Gustav Delplace of Namur Belgium cited Belgian prices for Platinum acquired from Johnson Matthey:

In the past 5 years, the price for 1 kg refined platinum fluctuated between Fr. 1,050 and Fr. 1,200 depending on the market price for the ore. {...} For the past 5 years, my apparatuses are from the platinum manufacturers Johnson Matthey & Company (Hatton Garden) made in London.

Citation: Chemie-Arbeit in Werk und Labor, Vol. 3 1/1880 p.11