From the Catalogue of Mathematical and Philosophical Instruments, Manufactured and Sold by James Green, No. 43 South Street Baltimore (1844), p.10: "Scrap Zinc and other Metals, Platina Wire, Sponge,..." unquoted.
An unplated Platinum counterfeit Half-Eagle ($5) in the American Numismatic Society Collection weighs 8.27 g ; at full weight 8.359 g. and circulated 8.346 g.
The June 1844 US duties collected on Platinum manufactures from the UK was USD$ 925.
An unplated Platinum counterfeit Half-Eagle ($5) in the American Numismatic Society Collection weighs 8.27 g ; at full weight 8.359 g. and circulated 8.346 g.
The June 1844 US duties collected on Platinum manufactures from the UK was USD$ 925.
1840: 1 Troy Ounce Platinum (refined, UK retail) ~ USD$ 7.50
c. 1840-5: 1 Troy Ounce Platinum (semi-refined ingot) = USD$ 7.50 - 8.33
c. 1845 Dental Alloy
c.1845: full set of teeth, in Gold ~ USD$ 200.
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