Considering the trade, it's surprising that Horne & Thornwaite offerred no Platinum or Palladium for sale by catalogue in 1849. Grove's Battery sold for the equivalent USD$ 7.22; Smee's for the equivalent USD$ 2.41 & $3.01.
Citation: Elements of electro-biology,: or the voltaic mechanism of man; of electro ... By Alfred Smee (1849) p.
Osmiridium sold retail at over 25% the Australian Spot for Gold ore.
1849: 1 Troy Oz. Osmiridium (Ore, Retail) = £ 1.25 (USD$ 6.0)
Citation: Advertisement Supplement in Logic, Richard Whately, 1849 p.126
1849: 1 Iridium-Tipped Gold Pen (London: Retail) = £ 0.525 (USD$ 2.55)
Citation: The Athenæum: A Journal of Literature, Science, the Fine Arts... (7/28/1849)
Dresser's Battery, c. 1849
Crystalline Silver Nitrate sold for £ 0.35
1848/9: Australian gold ore of unknown purity sold at £ 4.0 (USD$ 19.24)
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