c. October 1917: 1 Troy Oz. Platinum (semi-mfg, black-market) = USD$ 200.
Citation: Revenue Act of 1918; Part 3, United States Congress: House Committee on Ways and Means, Claude Kitchin p.1350
Late? 1917: 1 Troy Oz. Platinum (semi-mfg, whols.) = USD$ 120.
In April 1917 the market price for Platinum ingot was $103.77. The 'net price' is understood to be either the market price for the refined metal (excluding any manufacturing cost) OR the manufacturer's wholesale market price (excluding any taxes or duties.)
If the former case, the retail price for semi-manufactured Platinum should be incrementally/ proportionately higher.
April 1917: 1 Troy Oz. Platinum (manufactured, whols.) = USD$ 115.69
April 1917: 1 Troy Oz. Palladium Gold Alloy (, whols.) = USD$ 62.20
Palladium Prices, monthly (1917): $73. - 130.60
(?) 1916: 1 Troy Oz. Platinum (Mfg, Trade) = USD$ 115.69
(?) 1916: 1 Troy Oz. Palladium Gold Alloy (Trade) = USD$ 62.20
Citation: Soil science, Vol. 3, Rutgers University (1917) p.xix
Citation: The Journal of the National Dental Association, Vol. 5 (1917) p.1145
Platinised Gold, prior to 1918:
Imports of PGMs:
History of events in US Pt mkt: