France, 1888

1888:

A single boiler weighs 22 Kgs, plus accessories: 8 Kgs (= 30 Kgs) which costs Fr. 30,000 will daily produce 5,000 kg of 93-94 °acid

Ein einzelner Kessel wiegt 22 kg, das Zubehör 8 , kostet 30000 frs. und liefert täglich 5000 kg Säure von 93 bis 94°

October 1890:

For the last year the price of platinum has gradually risen; at the end of 1889 the price of rolled ingot metal did not exceed Fr. 1000 to 1100 per kilogram; today the price reached Fr. 2,750 and tends to rise still. Not two years ago Platinum could be sold Fr. 900./kilo.; its price, therefore, would have more than tripled since then.

1888: 1 Troy Ounce Platinum (Scrap?) = Fr 27.99 (USD$5.40)
 
Citation: La Lumiére électrique, Vol.38, No.45 (1890) , p. 295
  


1888: 1 Ozt. Platinum (Ingot) = Fr 37.64 (USD$ 7.25)
1888: 1 Ozt. Platinum (Mfg) = Fr 42. (USD$ 8.09)




Suspect German source, forex inaccuracies?


Japan:


Japan recorded a total purchase of 77 Ozt from France for 

1887/8: 1 Ozt. Platinum (Ingot) = ¥ 7.37 (Fr 28.03)

Japan, 1918

In Tokyo, Platinum was 11.18% more expensive than the New York Spot.

April 1918:
4/1918: 1 Troy Ounce Platinum (NYC Mkt) = ¥ 208.90 (USD$ 108.)

4/1918: 1 Troy Oz. Platinum (Tokyo Mkt) = ¥ 232.24 (USD$ 120.07)
4/1918: 1 Troy Oz. Silver (Tokyo Mkt) = ¥ 2.6542 (USD$ 1.3722)

Japan, 1917

In late October, Platinum was  11.65% higher in Tokyo than NYC.


10/1917: 1 Troy Ounce Platinum (NYC Mkt) = ¥ 208. (USD$ 104.)
10/1917: 1 Troy Oz. Silver (NYC Mkt) = ¥ 1.8541 (USD$ 0.92703)

10/1917: 1 Troy Oz. Platinum (Tokyo Mkt) = ¥ 232.24 (USD$ 116.12)
10/1917: 1 Troy Oz. Silver (Tokyo Mkt) = ¥ 2.6542 (USD$ 1.3271)


Late October, 1917: