Russia, 1919

With some doubts as to exact market-price dates:

Early 1919: 1 Troy Ounce Gold (officially) = 132.56 руб
Early 1919: 1 Troy Ounce Gold (black mkt) = 265- 318 руб

 
Where 5,280 Ozt Russian platina ore cost руб 5,000,000 and assumed .800 Fine = 4,224 Ozt Pt, the Ural cost of refined Platinum (at 36 руб/$1) :

May, 1919: 1 Troy Ounce platina (Ural Ore) = 946.97 руб (~USD$ 26.30)

May, 1919: 1 Troy Oz Pt (Ural Ore, .999 Fine) = 1,183.71 руб (~USD$ 32.88)
May, 1919: 1 Troy Oz. Pt (Ural Refining Cost) = 35.52 руб (~USD$ 0.99) 
May, 1919: 1 Troy Oz Platinum (Ural Spot) = 1,219.22 руб (~USD$ 33.87)

Compare:
 
May, 1919: 1 Troy Oz. platina (~80% Ore, Chocó Bid) ~ USD$ 20.25  

1919: 1 Troy Oz. platina (Colombia: ~80% Ore, US Customs) = USD$ 88.4286

1919: 1 Troy Oz. Pt (Colombia: ~80% Ore, .999) ~ USD$ 110.5357
 
May, 1919: 1 Troy Oz. Platinum (NYC: ingot @ US Govt) = USD$ 102.60

June, 1919: 1 Troy Oz. Platinum (NYC: ingot @ US Govt) = USD$ 105.80

Citation: American Journal of Pharmacy, Vol. 92 Feb 1920 p.115



Purity of Russia Ore: