1803

UK/London:

c.1803?



1803: Fr 1. (hypothetically 5 g. @ .900 = 4.5 g. was actually (4.9765 @ .896 =) 4.581 g. Fine Ag.
 


USA:

USA:



Dated regulation, 1786 Standard
1802/3: Average Weight of The Silver Dollar? 0.866666665 Ozt @ .89243 Fine Ag = 371.25 Ozt 

Citation: Arithmetical magazine: or, Mercantile accountant, adapted to the commerce &c. James Alexander Mackay (1803) 

France:

Bonneville's report was completed before September 1804; the coin is most likely from 1795 as indicated, pulled from circulation (~6.5yrs) and assayed circa 1803. 

Bonneville's assay of fineness appears entirely incorrect, wholly inconsistent with other contemporary assays.

By these assumptions  (Full Mint Weight = 0.871875 Ozt; Annual Loss 0.365252 English Grains Troy, etc.) the Average Circulated Dollar was underweight in ~8.5 yrs.

$1. = 0.865787466 Ozt



c. March 1803: