USA, 1817

In 1817, but not in 1818, Dr. Wollaston was able to acquire bulk platina (>100 lbs) from Vaughan in Philadelphia; his own Bid (London Scrap Rate) appears unchanged.


1817: 1 Troy Ounce platina (USA: PA, Bulk) = USD$ 0.41143 (£ 0.0911) 
1817: 1  Ozt. Pt (USA: PA, Bulk) = USD$ 0.5486 (£ 0.1215) 
1817: 1  Ozt. Pt (USA: PA, Labor) = USD$ 0.48 (£ 0.1063)
1817: 1 Ozt. Platinum (USA: 1st Cost, Phila., Bulk) = USD$ 1.03 (£ 0.2278) 
   
As an entrepreneur, Bollman retailed manufactured Platinum for $60/lb. avd, a 300% markup (4x) on the First Base Cost; hypothetically, the manufacture of stamped Pt planchets without 'retail profit' might only be ~200% markup.  

1817: 1 Ozt. Platinum (USA: Semi-Mfg, Wholesale) = USD$ 3.09 (£ 0.6835) 

Dr. Robert Hare purchased imported Platinum wire c.1817.  It is unclear if this was by catalogue or a Philadelphia vendor:

c.1818:
Mock Gold: Thomas Cooper, of University of Pennsylvania

Citation: A system of chemistry: in four volumes, Vol. 2 (1818) Thomas Thomson, Thomas Cooper
 


Indicating standard forex of $ 4.4444/ £ 1., one 'Book of Leaf Gold' cost the trade $ 0.45, after the 15% tariff.


1817: 1 Packet/20 Books Gold Leaf (Trade) = $ 9.
1817: 1 Packet/20 Books Gold Leaf (European Import) = $ 7.65

Assuming 6 English Troy Grains per Sheet/Book:

1817: 1 Ozt Gold Leaf (Trade) = $ 36.
1817: 1 Ozt Gold Leaf (European Import) = $ 30.60
 


1 Gold-Leaf = 0.192 Grains of 10.89 Sq. In; 1 Book of Leaf-Gold = 4.8 Grains (4.725 Fine Au)

1 Gold-Leaf would cover just over 3 8-Escudos; assuming 1/3rd wastage however, it would take 140-145 Leaves per coin to add 6.84 Grains in mass to a 8-Escudo Pt Counterfeit, ~ 6 Books per Pt Counterfeit: (NYC) Trade Cost = $ 2.70, without factoring any other materials or labor.

1817: 1 Ozt. Platinum (USA: Semi-Mfg, Wholesale) = USD$ 3.09 (£ 0.6835) 
1817: 1 Ozt. Gilded Platinum (USA: Est. Material Cost) = USD$ 5.79 (£ 1.28) 
    




1817 Exchange: the 8-Escudo's value given at $15.506