USA, 1878: Bishop's Price

1877/8: 1 Troy Ounce platina (Ore, Exported) = M$ 3.2355 (USD$ 3.23)
1877/8: 1 Ozt. Pt (Ore, Export, .999) = M$ 4.31 (USD$ 4.31)  


1878: 1 Troy Oz. Platinum (Mfg, Whols.) = USD$ 14.40
1878: 1 Ozt. Platinum (Intrinsic, Whols.) ~ USD$ 12.

c.1878/9: 1 Ozt. Palladium (Pure) = USD$ 42.

1878 French Exposition, J-M still 20 kgs = 643 Ozt.

1878: 1 Ozt. Platinum (UK: Mfg, bulk) ~ $ 7.77

1878: 1 Ozt. Platinum (SF: Refined) = USD $ 15.

Citation: Scientific American, Vol. 43; Volume 43 (8/30/1879)



Dental Palladium more than 3x as expensive as Pt.


Citation: Transactions of New York Odontological Society;  New York Odontological Society (1880)

1878: 1 Ozt. Au Alloy (NYC: Dental Trade) = USD $ 32.
1878: 1 Ozt. Au-Pt Alloy (NYC: Dental Trade) = USD $ 30.
1878: 1 Ozt. Pt Alloy (NYC: Dental Trade, @.333 Pt) = USD $ 26.10

Citation: Dental and Oral Science Magazine, Vol. 1 (april 1878) p.197


Also, the NY Customs 'estimated value' for old Plate is entirely consistent with recorded Silver market prices (Fine Ag.)

1877/8: 1 Ozt. Silver (Mexican plate, at purity) = $ 1.149

 

US Imports:



Mexican Exchange consideration: