UK, 1863: Falling Domestic Demand for English Platinum Stills/Retorts

Presumably, the tariffed platina price (Russian ingot, Colombian ore) ; actual spot-prices must have been lower.

1863: 1 Troy Oz. Platinum (SPb: Russian Ingot, Whols.) < £ 1.10 ($ 5.36)
1863: 1 Ozt. platina (Whols., Colombian Ore) < £ 1.10 ($ 5.36)

Citation : Ures̓ dictionary of arts, manufactures and mines, Vol. 3 (1867) p.443


First edition 1867, ms. from 1865 (?); dated price, 1862.

1863: 1 Ozt. Platinum (Ingot, Mkt.) = £ 1.20 (USD$ 5.85)

Citation: Artithmetic theoretical and practical, William Harding Girdleston (1870), p.322.

1863: 1 Ozt. Platinum (Mfg, Ret.) = £ 1.25 (USD$ 6.09)
1863: 1 Ozt. Platinum (Scrap, Bid?) = £ 0.60 (USD$ 2.93)  

Citations: Congressional Series of United States Public Documents, Vol. 6497, (1913) p.4866



An expenditure report shows the wholesale Platinum price falling, 1860-64, and the wholesale margin for refined product appears to be a scant (£ o.10 or $ 0.50, if the value of platina wastes is excluded.)

1862: 1 Troy Oz. Platinum (whols., wire) = £ 1.23 ($ 5.97)
1863: 1 Troy Oz. Platinum (whols., wire) = £ 1.20 ($ 5.85)

1860-1863: Military School expenditure, Wholesale Pt Price
Citation : Accounts and papers of the House of Commons, Vol. 35, 4/2-29/7/1864, p.134




A combination of increased supply (platina) cheaper production costs and global competition made stills more affordable to acid manufacturers, but most abandoned Platinum by 1873.

1836:

1873:

Citation: The Chemical news and journal of industrial science; with which ..., Vols. 7-8, Sir William Crookes (11/63), p.228.