Spanish dollar
The Spanish dollar (also kown as the Castilian mark) was a silver (primarily) or gold coin which was minted by Spain. Spanish emperor Carlos I ordered the coin at the beginnings of the 16th century. It was in heavy use in North America and in China in the early 19th century.The Spanish dollar had the same value as the German thaler. The coin contained 4608 Spanish grams (which is equilivant to 3550.16 troy grains or, 230.0465 metric grams). The fineness of gold was measured in quilates (carats) and cuartos (carat grains). The fineness of silver was measured in dineros and granos.
