UK, 1803 - 1824: Palladium Price Falling

Wollaston's Palladium was 89.35% pure; his Rhodium was 99.3% pure.  His first attempt to sell 2.8 Ozt at £ 24. (£ 67.20) was largely unsuccessful; Mrs. Foster sold 0.875 Ozt (£ 21.) 0.6917 Ozt to Chenevix, a single (scientist) client.

See B. I. Kronberg; L. L. Coatsworth; M. C. Usselman: "The Artifact as Historical Document Part 2: The Palladium and Rhodium of W. H. Wollaston." Ambix, 28(1), pp. 20–35

1803: 1 Troy Ounce Palladium (Retail: 0.8935) = £ 24. (USD$ 109.)

1803: 1 Troy Oz. Palladium (Retail: .999)  = £ 26.86 (USD$ 122.) 

1805: 1 Troy Oz. Palladium (Trade, Knight: 0.8935) = £ 12.60 (USD$ )

1805: 1 Troy Oz. Palladium (.999)  = £ 26.86 (USD$ ) 

1808: 1 Troy Oz. Palladium (Trade, King &Lochee) = £ 4.7357 (USD$ )

1808: 1 Troy Oz. Palladium (.999) = £ 5.30 (USD$ ) 

1811: 1 Troy Oz. Palladium (Trade, Bingley) = £ 4.8227 (USD$ )

1811: 1 Troy Oz. Palladium (.999) = £ 5.3975 (USD$ ) 

1812: 1 Troy Oz. Palladium (Trade, Accum) = £ 4.85 (USD$ )
1812: 1 Troy Oz. Palladium (Trade, .999) = £ 5.4281 (USD$ )  
1812: 1 Troy Oz. Palladium (Est. Retail, Accum) ~ £ 5.82 (USD$ )
1812: 1 Troy Oz. Palladium (Est. Retail, Accum) ~ £ 6.5174 (USD$ ) 
 

1814: 1 Troy Oz. Palladium (Trade: Cary) = £ 4.20 (USD$ .)

1814: 1 Troy Oz. Palladium (.999)  = £ 4.70 (USD$ )
1814: 1 Troy Oz. Palladium (Est. Retail: Cary) = £ 4.90 (USD$ .)  

1814: 1 Troy Oz. Palladium (Est. Ret.: .999) = £ 5.50 (USD$ .)
   
1819: 1 Troy Oz. Palladium (Trade: .999 Pd) = £ 3.8691 (S$ 16.52) 


Wollaston's Auro-Palladium alloy was 4:1 Au/Pd, 9.5 Ozt and cost £ 5.1645, the Gold price was variable and adjusts the Alloy Rate:

July, 1810: 1 Troy Oz. Gold (Troughton) = £ 4.9636 (USD$ )  
1810: 1 Troy Oz. Auro-Palladium (Mfg: Troughton) = £ 5.1645 (USD$ )

1810: 1 Troy Oz. 'Palladium' (Mfg: .893) = £ 5.9678 (USD$ )

1810: 1 Troy Oz. Palladium (Mfg: .999) = £ 6.6829 (USD$ )

1808-10: 1 Troy Oz. Auro-Palladium (Mfg: Troughton) = £ 5.0671 (USD$ )

1808-10: 1 Troy Oz. Palladium (.999) ~ £ 6.68 (USD$ )

  

 Citation: The London encyclopaedia: or, Universal dictionary of science ..., Vol. 16,  Edit. Thomas Curtis (1826) p.517

c.1835: In the 1820s, Palladium was largely unworked, due to its scarcity.

1835:  1 Troy Oz. Palladium (refined, unmfg) ~ Fr 249 (USD$ 48.)