UK, 1811: Wollaston's Platinum Boiler for Samuel Parkes

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

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

1811: 1 Troy Oz. Platinum (manufactured, still)  = £ 0.8355 (USD$

1811: The price is consistent with Wollaston's charges for 1812.  Samuel Parkes' platinum still weighed 377 Troy ounces.  At 3.79 litres per gallon, the approximate amount of refined Platinum in the 1813 platinum still manufactured for Parkes by Wollaston had a weight per Litre was 2.3747 Troy Ounces; the amount of Litres contained per Troy Ounce was 0.4211 Litres. 

Erroneous record of Parkes' still, underestimated price and overestimated capacity!