USA, 1874-76: Importer's Prices Fall to Currency Rates (SS White Catalogue)

From The Scientific American, August 8 1874:
Q. What Is the coat of a strip of platinum, such as Is used in a Grove battery? 

A. It depends upon the size of cell. Platinum Is worth about 28 cents per gramme, or between 2 and 3 cents a grain.
1874: 1 Troy Ounce of Platinum (market) = USD$ 8.71
1874: 1 Troy Ounce of Platinum (retail) = USD$ 14.40 

A major vendor of Platinum, S.S. White Co. had a (specie) price reduction in 1875, then another to currency rates (Greenbacks) in 1876.  

The wholesale premium for pure Silver was >75% ; for pure Gold the wholesale premium was

1877: 1 Troy Ounce of Platinum (semi-mfg, sheet, retail) = USD$ 11.88

1874: 1 Troy Oz. Platinum (semi-mfg, sheet, whols.) = USD$ 8.50 / $9.52

1874: 1 Troy Oz. Silver (market price, Fine) = USD$ 1.27 / $ 1.43

1874: 1 Troy Oz. Silver (pure, whols.) = USD$ 2. / $2.24
1874: 1 Troy Oz. Gold (official price, Fine) = USD$  20.67 / $24.18
1874: 1 Troy Oz.Gold (pure, whols.) = USD$ 22.40 / $ 25.09 

1875: 1 Troy Oz. Platinum (semi-mfg, sheet, whols.) = USD$ 8.50 / $9.77

1875: 1 Troy Oz. Silver (pure, whols.) = USD$ 2. / $2.30

1875: 1 Troy Oz. Gold (pure, whols.) = USD$ 22.40 / $ 25.74

1876: 1 Troy Oz. Platinum (semi-mfg, sheet, whols.) = USD$ 8.50

1876: 1 Troy Oz. Silver (pure, whols.) = USD$ 2. / $ 2.30

1876: 1 Troy Oz. Gold (pure, whols.) = USD$ 22.40  / $ 25.76

Citation: The Dental Cosmos, A Monthly Record of Dental Science,  By James A. White (1874) p.690
 



Citation: The Dental Cosmos, A Monthly Record of Dental Science,  By James A. White (1876) p. 709

Citation: Samuel S. White Catalogue of Dental Instruments and Equipment,  Samuel Stockton White, Audrey B. Davis (1876) p. 269