Silver dollar. Weighs 412 1-2 grains, is .08 of an inch thick and its diameter is 1.5 inches.
There are 480 grains in a troy ounce ; a silver dollar contains 371.25 grains of fine (pure) silver,
the remainder of the weight of the coin being 41.25 grains of copper, the total weight of the coin
being 412.5 grains. To ascertain the commercial (market) value of the silver in a silver dollar
multiply the commercial price of fine silver by 371.25 and divide the result by 480.