UK, 1899: Platinum, Iridium, Palladium

At the very end of the Century, Palladium prices varied, about 75% higher than Platinum.

Mid-1899: 1 Troy Ounce Platinum (refined, whols.) = £ 3.11 (USD$ 15.11)
1899: 1 Troy Oz. Pt (German Refining Cost) ~ £ 0.0483 ($0.30)
c.1898: 1 Troy Ounce Palladium (refined, whols.) = £ 5.25 (USD$ 25.57)
1899: 1 Troy Ounce Palladium (refined, retail?) = £ 7.68? (USD$ 37.33)

1899/1900: 1 Troy Ounce Palladium (refined, whols.) = USD$ 25.57

January, 1899:
Citation: The Electrical review, Vol. 44 (1899)


 January 1899:


March, 1899:


Early April 1899: 1 Ozt. Platinum (Producer, Spot) = £ 3.50 (USD$ 17.05)



December, 1899:

Citation: The Electrical review, Vol. 44 (1899)


 
Late 1899 - February, 1900: 
Citation: The Auto: the motorist's pictorial, Vol.4, Stanley Spooner; (March 1900)p.292


Circa 1898:
Citation: The Horseless Age, Vol.5 No.16 (January 10 1900) p.18


Citation: The Pharmaceutical era, Vol. 25 (1901), p.87

Citation: Journal of the Society of Chemical Industry, Vol. 18 p.1067

c.1897: 1 Troy Ounce Iridium (ore, mkt) = £ 1.50 (USD$ 7.29)

1899: 1 Troy Oz. Platinum (Australian ore, UK mkt) = £ 1.677 (USD$ 8.17)

1900: 1 Troy Oz. Iridium (ore, mkt) = £ 2.50 (USD$ 12.18)

1899:
Citation: Handbook to the Mining and geological museum, SydneyBy Geological Survey of New South Wales, George William Card (1902) p.22

1900: