USA, 1918: War Platinum

The numismatic premium for a 1830 Proof 6-Rouble was 53.8% over the NY Market-Spot.  

This may be Lot 1001 in Stack's "Vermuele, Ward & Mexico Maxico" sale (New York, January 11, 2010) sold for $51,750.or 3,149% over the Pt Spot.

December, 1918: 1 Troy Oz. Platinum (Numismatic, @ .999 Pt) = USD$ 160.

Citation: The Numismatist: An Illustrated Monthly Magazine for Those ..., Vol. 32 (Feb. 1919)


May, 1918: 1 Troy Oz. Platinum (Official: .999?) = USD$ 105.
May, 1918: 1 Troy Oz. Palladium (Official: .999?) = USD$ 135.
May, 1918: 1 Troy Oz. Iridium (Official: .999?) = USD$ 175.

Citation: Price Bulletin, Issues 6-57 (US War Industries Board, 1919) p.75



Palladium Prices, monthly (1918): $135. - 150. (4/18) - 128.60

Citation: The Mineral Industry, Vol. 27 p.571



Early December, 1918:


1918: 1 Troy Ounce Platinum (ingot @ US Govt) = USD$ 105.

1918: 1 Troy Ounce Iridium (pure @ US Govt) = USD$ 175.

1918: 1 Troy Ounce Palladium (pure @ US Govt) = USD$ 135.

July 1918:

1918:

1916-18: 1 Troy Oz. Platinum (Colombia spot) = £ 19.56 (USD$ 93.10)
1916-18: 1 Troy Oz. Platinum (refined ingot, spot) ~ £ 22.0 (USD$ 105.)
1916-18: 1 Troy Oz. Platinum (UK scrap, Buy Rate) ~ £ 21.0 (USD$ 100.)









 Imports of PGMs:



USA Imports, Fiscal 1918:
 
History of events in US Pt mkt:



1919?