NY Monthly Mkt Prices for Russian Ingot, 1910 - 15:
Citation: Report of the Royal Ontario Nickel Commission: with appendix; George Thomas Holloway (1917)
1914:
At a Late October, 1914 Texas Auction, numismatic Platinum sold 50% higher than Spot.
October, 1914 : 1 Troy Ounce Platinum (Numismatic, Coined) = USD$ 75.09
Citation: The Numismatist: An Illustrated Monthly Magazine..., Vol. 27 (1914) p.607
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