USA, 1872: Palladium in Chemist's Catalogue (NYC, Benjamin)

1871-72: 1 Troy Ounce Palladium (refined)  = USD$ 96.45
1871-72: 1 Troy Ounce Platinum (refined)  = USD$ 10.90 - 12.45

Citation: American hand-book of chemical & physical apparatus, minerals, fossils, rare ... By Edmund B. Benjamin (1872 ), p.199

Adjusting for Real Inflation since 1871 (6,830%) we can extrapolate a long term price for refined Palladium to be $ 6,684. (in 2009 USD$.)

Adjusting for Real Inflation since 1871 (6,830%) we can extrapolate a long term price for refined Platinum to be $ 814. (in 2009 USD$.)