The term "silver dollar" is used very loosely. It can refer to 3 types of coin:
It weighs 26.7 grams.
26.730 grams is the weight standard for all US silver dollars from 1840 to1935.
The Franklin half dollar weighs 12.5 grams and is composed of 90% silver and 10% copper.
They originally weighed 26.96 grams. Of course a circulated coin will weigh slightly less. And genuine silver dollars are NOT magnetic.
It has a total weigh of 24.6 grams.
It weighs 26.7 grams.
It is 90% silver and 10% copper. It has a total weight of 26.7 grams.
26.730 grams is the weight standard for all US silver dollars from 1840 to1935.
US silver dollars weigh 26.73 grams and contain 90% silver. Do a little math and that converts to 0.7736 troy ounces of silver per silver dollar.
All US silver coins before 1964 were 90% silver. Peace dollars weigh 26.7 gm if not worn, so they contain about 24 gm of pure silver.
The Franklin half dollar weighs 12.5 grams and is composed of 90% silver and 10% copper.
They originally weighed 26.96 grams. Of course a circulated coin will weigh slightly less. And genuine silver dollars are NOT magnetic.
There is 24 grams of silver in a 1891 US silver dollar.
One method to determine the authenticity is to weigh the coin. A genuine U.S. silver dollar should weigh 26.73 grams.
It has a total weigh of 24.6 grams.
Check the weight. An authentic US silver dollar should weigh 26.73 grams. If the coin is heavily worn, the weight might be just slightly less.
An 1870 US Half Dollar weighs 12.44grams and is 90% silver, giving it an ASW (Actual Silver Weight) of 11.196 grams or 0.36 troy ounces.