USA, 1862

1862: 1 Troy Oz. Platinum (UK: Semi-mfg, Trade) = £ 1.35 ($ 6.58)

1861/2: 1 Troy Ounce Platinum (Wire: Wholesale) = £ 1.225 ($ 5.95; USD$ 5.95 - 6.06)
1862/3: 1 Troy Oz. Platinum (Wire: Wholesale) = £ 1.2087 ($ 5.89 ; USD$ 6.03 - 9.39) 
1862/3: 1 Troy Ounce Platinum (Wire: Wholesale) = £ 1.201 ($ 5.85 ; USD$ 6.76 - 9.39)



in August 1862, Platinum crucibles became more expensive, after the 1862 tariff hike.

Published prices appear consistent, but large premiums and Gold-rate inflation occurred 1862-4.

February, 1862:

1861/62: 1 Troy Oz. Silver-Platinum Alloy (French Import, Trade) = USD$ 6.50

1861/62: 1 Troy Ounce Gold (presumed, whols.) = USD$ 22.

Citation: New York Dental Journal, Vol.5 (March, 1862) p. 107

February, 1862: 1 Troy Oz. Silver-Platinum Alloy (Dental Trade) ~ $ 7. ; USD$ 7.25

Citation: Hettingers Dental News, Vol, 1-6 (February, 1862) p. 16

Citation: New York Dental Journal, Vol. 5 (July?1862) p.64

Platinum became war-materiel in 1862; scarcity was noted in the South.

Judging from European prices, the US Market Platinum Low may have occured in 1862/3?

Citation: Dental office and laboratory, Vol. 5, No. 3 (1891) p.

Where 879 Pounds Avd. is understood to be 12,818.75 Ozt,
 
1861/2: 1 Ozt. Platinum (Plate: Whols., Import.) = $ 5.2797




Where 11 Pounds Avd. is understood to be 160 Ozt,
 
1861/2: 1 Ozt. Platinum (Plate: Whols., Import.) = $ 5.2488 
 
Where 897 Pounds Avd. is understood to be 13,081 Ozt,
 
1861/2: 1 Ozt. Platinum (Plate: Whols., Import.) = $ 5.2818