UK/Russian, 1828/9: Coinage Experiment & Platinum Prices

1828:  1  Troy Oz. Platinum (London mkt) = £ 1.55  (USD$ 7.66)
1828:  1  Troy Oz. Platinum (Russian Coin value) = £ 1.10  (USD$ 5.43)

Calculating different Sterling values for mined Uralian platina & gold, the 1827 producer value for ore was estimated.

1827: 1 Troy Ounce platina (dubious estimation of ore value) = £ 0.42 
1827:  1  Troy Oz. Platinum (Russian coin value) = £ 1.43   (USD$ 7.05)


1827: 1 Troy Oz. platina (ore @ St. Petersburg) = 21.87 руб = (USD$ 4.37)
1827: 1 Troy Oz. Platinum (semi-refined @ St. Pete) = 29.16 руб = (USD$ 5.83)

1827: 1 Troy Oz. Platinum (refined; ingot @ St. Pete) = 36.46 руб = (USD$ 7.29)

c.1827/8
Citation: Bulletin universel des sciences et de l'industrie: Bulletin des sciences ...(1829) p.339


1828-40:

Citation: The Athenaeum and literary chronicle, Volume 1, Issues 63-92 (1829), p.30

1829:  1  Troy Oz. Platinum (Russian coin value) ~ £1.45 (USD$ 7.05)

Citation: The Literary gazette: A weekly journal of literature, science ...,Vol. 13 edited by William Jerdan et al. p.74

1827:

1827: 1 Troy Ounce Platinum (refined, semi-mfg) = Fr 27.96  

(=£1.06; without duties, insurance, import, profit, etc.)

1827: 1 Troy Ounce Platinum (estimated coined) = USD$ 7.15

c.1829: 1 Troy Ounce Platinum (estimated to Silver) = USD$ 5.17 - 6.47

c.1829:
Citation:  A manual of chemistry: containing the principal facts of the ..., Vol. 2. William Thomas Brande (1830) p.215 



Citation:  Knowledge for the people: or, the plain why and because. John Timbs (1832) p.198  



Citation:  The Encyclopedia Americana: a library of universal knowledge (1919) p.230